Jack Nicholson has been serving up a steady stream of cheer for cancer patients at the Cedars-Sinai Los Angeles hospital.

The Hollywood icon and Oscar winner has been visiting terminal patients and cheering them up with jokes, card games, and behind-the-scenes stories about his career.

Nicholson's next career move comes in the form of a movie called The Bucket List. He plays a dying man in the film and began spending time at the hospital to research his role. But once his film finished, Nicholson kept visiting. He was that touched and moved by the patients.

Hospital staff say the actor's visits do wonders for the patient spirits. The only down side is for Nicholson who finds it hard to leave, knowing he may have seen some of his new friends for the last time.

The power of positivity is subjective when it comes to cancer survival. There are those who argue that keeping up a positive attitude puts too much pressure on cancer patients. I think it depends on who you are at the time of cancer diagnosis, and what your individual personality style is in facing adversity, that is far more relevant to being a survivor.

Last Wednesday, when the news broke that Farrah Fawcett had been diagnosed with cancer, she asked that her privacy be respected. As is the case with most celebrities, it was not likely to happen. We have seen almost constant coverage in the details of her cancer diagnosis and treatment, and the paparazzi have captured in photographs her every movement.

Before the sun sets on this day, you are going to hear that Farrah Fawcett has been treated for colorectal cancer. Currently being reported in London newspapers -- here, here, and here -- the National Enquirer is running an exclusive story that Fawcett, famous poster sex symbol from the days of Charlie's Angels fame in the 70s, has already undergone radiation and surgery for a tumor found by doctors after her appearance at the Emmy Awards with Charlie's Angels co-stars Jaclyn Smith and Kate Jackson.

It might be true, and if so, we hope only the best for Farrah Fawcett. But we should hold out for something more substantial than the news being reported now, because we all remember the Whitney Houston brain tumor news, and Steven Tyler's throat cancer news. Which is why I am mentioning it here -- for a little cautionary perspective.

Update 4:30 (PST): Unfortunately, it appears this might be more than a rumor. Entertainment Tonight has published this report:

"ET confirms that Farrah Fawcett is battling cancer. Just minutes ago, the Charlie's Angels star released a statement to ET, saying, "Please respect my privacy at this challenging time."

The 59-year-old actress was last seen on the big screen in 2004 in The Cookout and has guest-starred on numerous TV shows in the past decade, including Ally McBeal, The Guardian, and Spin City."

Related post: Farrah Fawcett: Positivity is a necessity in cancer fight.

Late last March fans of rock legend and Aerosmith lead singer Steven Tyler became concerned over speculation that Tyler had been diagnosed with throat cancer. Even though the remaining Rockin' The Joint show dates were cancelled, everyone connected to Tyler assured the public the rumors were false. Steven Tyler did not have cancer. He was suffering from strained vocal cords and needed a rest.

At the time, bassist Tom Hamilton explained the cancelled shows by saying, "You know Steven. Anything worth doing, to him, is worth overdoing," in reference to the fact that the band had been touring more now than it did 10 years ago.

Unfortunately, several months later it was announced that Hamilton had been diagnosed with cancer.

While the rumors had quieted concerning Tyler's health, now and then something new would come to our attention that made us wonder if he was okay. A reader wrote in that he had seen Tyler at the oncology clinic at a hospital he was visiting. We kept that under our hat.

Last night, Tyler appeared on Access Hollywood and for the first time, publicly discussed his health. No, he was not diagnosed with throat cancer -- but he had faced a serious health crisis and decided to speak about it. Tyler said he had been fighting a secret battle with a silent killer -- Hep C. Diagnosed three years ago, he was told by his doctor, Deepak Chopra's brother, that it was time he sought treatment. Tyler agreed to undergo a year of chemotherapy with interferon. He stated it nearly killed him but managed to stay with it and complete treatment. Tyler had Hep C for many years, and was asymptomatic, which is typical.

During the interview, Tyler said, "Hepatitis C is the one that, of all the people in this room, at least three have it and don't know it." He would like to raise awareness about Hep C and mentioned he might appear on Oprah for that purpose. "It's one of those things people don't speak about it, but it is treatable."

Almost 4 million Americans, or 1.8 percent of the U.S. population, have been infected with hepatitis C virus (HCV); it is the most prevalent cause of chronic liver disease in the United States. 80 percent of those with Hep C have no symptoms. Chronic hepatitis C can cause cirrhosis, liver failure, and liver cancer.

If you missed the television Access Hollywood interview with Steven Tyler, the video segment of the program is available online here.

Diahann Carroll, an actress who started her career back in the 50s, and Oscar nominee who has starred in such TV shows as Dynasty, will be reaching out to older women in an effort to raise breast cancer awareness and the breast cancer risks they face. Carroll, who was diagnosed at the age of 63, spoke with CBS The Early Show's Julie Chen about the shock of being diagnosed with breast cancer when she had no family history for the disease. At the time, she said she was much more concerned about preventing age-related diabetes and heart disease.

According to recent surveys, so are most postmenopausal women. The results of a new Harris Interactive survey of nearly 20,000 women revealed that only 37 percent of women 55 or older are concerned about developing breast cancer as they age. The findings also show that three out of every four women don't know that being over 50 is the greatest risk for developing breast cancer. In fact, most women believe that the greatest risk factors are having a family member with the disease and inherited genetic mutations.

Carroll has been hired by Eli Lilly as the spokesperson for the launch the Strength in Knowing: The Facts and Fiction of Breast Cancer Risk campaign and website created to educate postmenopausal women about the real breast cancer risk factors. In the new fall TV season, Carroll will become a part of Grey's Anatomy. She would not give Chen any details. You can watch The CBS The Early Show interview with Carroll here.

Video game icon and gaming legend Lara Croft has been chosen as spokesmodel for the Skin Cancer Awareness Sun Smart Teens Program. According to the skin cancer awareness foundation, the goal of the Sun Smart Teens Program will be to raise awareness of skin cancer risks and educate teens to the dangers of the sun. Because melanoma is being diagnosed in ever younger populations, the foundation has chosen a spokesmodel they feel teens can relate to -- Lara Croft personifies the benefits of having a healthy body. Beginning November 2006, Lara Croft's image will be used as part of a nationwide tour designed to educate and provide skin cancer awareness information for teens. For more information, visit the  Skin Cancer Awareness Sun Smart Teens Program.

"The reports of my death have been greatly exaggerated." -- Mark Twain

According to several international news services and tabloid newspapers with an online presence, Elizabeth Taylor, legendary movie star and cancer survivor, is suffering heart failure and near death. Reported to be bedridden at her home in Bel Air, California, she is said to have cancelled her annual Easter party to plan her funeral. According to an unnamed friend, "Liz is inching closer to death every day and she knows it. It is not a pretty picture. She's not leaving a lot of money to her children. She wants the bulk of her fortune to go to AIDS research." I guess dying isn't enough of a news story, a publisher decided to add this scurrilous gossipy little comment from an anonymous friend on how her estate will be settled. Other than her attorneys and estate planners, I doubt few know the status of her will.

Her publicist, Dick Guttman, states that Taylor is not near death, and is instead, quite busy with her successful perfume and jewelry lines and the work she does for AIDS. "The endless health stories surrounding Taylor's supposed impending death," Guttman says, "have just become exasperating." Mark Twain predicted this one right. I cannot find any credible reports indicating that Guttman is playing smoke and mirrors with the public. All the reports of Taylor's impending death do seem to be coming from very specific, and perhaps slightly questionable, sources for news information. My vote for accuracy goes to Guttman. We send her our best wishes for continued good health.