Theo Legget, international business reporter for the BBC on yesterday's stock market fall and rebound; this morning's headlines.

Following an aggressive Internet campaign by the actress's fans, Betty White, is set to host Saturday Night Live this weekend.  The 88-year-old actress will join Jay-Z on the show. Comedian Whitney Cummings talks about good comedy, and why the golden girl's still got it.

We join with The Week Magazine to take a look back at the best and the worst of last week. The past seven days were pretty good for real life super-heroes, as a man dressed as Spider-Man stopped a theft in progress at a comic book store. Meanwhile, PETA accused two New York restaurants of serving live octopus.

Tomorrow, we'll look at a new report from the President's Cancer Panel on steps you should take in your everyday life to reduce the risk of cancer. It warns that widespread exposure to toxic chemicals is causing "grevious harm" to our bodies and needs to be better regulated. This is not the first time these red flags have been raised, but this is from a panel that New York Times columnist Nicholas Kristof calls "the Mount Everest of the medical mainstream." Among other things, it recommends avoiding certain foods, toys and garden products, as well as microwaving your food in plastic containers.

We're starting the conversation online now: Do reports like this make you change your behavior?

Energy reforms are on the minds of politicians following the collapse of the Deepwater Horizons oil rig that spewed more more than 200,000 gallons of oil a day into the Gulf of Mexico. California governor, Arnold Schwarzenegger has reversed his position, and come out against off shore oil drilling. Then yesterday, Interior Secretary Ken Salazar announced a halt on new drilling permits until his agency determines the cause of the rig collapse. Historically, regulatory and environmental laws follow disasters and regulatory changes, from equipment upgrades to increasing legal liability, are already on the table.

Newsday film critic and Takeaway contributor, Rafer Guzman previews the weekend's most anticipated films. Robert Downey, Jr. is out to save the world in "Iron Man 2" and a new documentary looks at the lives of babies around the world.

She's adored by millions for her teenage roles in movies like “Sixteen Candles,” but today, Molly Ringwald has grown up. She is both an on-screen and off-screen mom. She stars in ABC Family’s “Secret Life of the American Teenager.” She has three kids. And on top of that, she's written a new book that’s part autobiography, part beauty guide and part mommy handbook called “Getting the Pretty Back.”

Former Detroit mayor, Kwame Kilpatrick has been disgraced by corruption scandals, stripper scandals and using civic funds for personal vacations with his family. He currently owes the city of Detroit $1 million, but claims that he cannot pay his debts. And so, he's asking for donations on his website (with no mention of how he'll use any funds raised). 

Terrorism expert and professor of security studies at Georgetown University, Bruce Hoffman, looks further into the transformation of Faisal Shahzad from family man to terrorist; headlines.

The Pakistani Taliban are sending conflicting messages regarding their involvement with Times Square terror suspect Faisal Shahzad. A Taliban spokesman on Thursday denied the group's involvement with Shahzad, but said the Pakistani Taliban will expand their focus to include western targets, including the U.S.

• Financial Takeout: Louise Story, Wall Street and finance reporter for The New York Times, joins the show with details of one of the most dramatic half-hours in stock market history. Also, Goldman Sachs braces for their shareholders' meeting today, as the company loses business from AIG. 
• U.K. Elections: BBC's Rob Watson has been reporting on the formation of the new British government following the closest elections in recent history. Britain currently faces a hung parliament; with no party gaining a clear majority, the parties will negotiate this weekend to try to form a coalition government.

This week is the one year anniversary of a pilot program testing out a health care reform theory. The program allows insurance reimbursement to doctors for outcomes, not just services. So a doctor has incentive to hold a phone or email consultation with a patient, or even to call them up and remind them to exercise if that's the prescription. Some people hope this method will cut down costs and make health care more affordable. Group consultations are also helping patients with the same condition, who can all consult with a doctor or other medical staff at the same time.

It took federal investigators only 53 hours to locate and arrest Faisal Shahzad, the man accused of attempting to set off a car bomb in New York’s Times Square area.  

Today, in honor of Mother’s Day, we’re looking back at our favorite on-screen moms, from the fierce to the nurturing to the lullaby-singing. We love them, we hate them, and we’ve enjoyed them on screen for as long as we’ve enjoyed movies.

Unemployment numbers were released this morning. They show that 290,000 new jobs have been added, the most in four years. However, the unemployment rate, which had been holding steady at 9.7 percent since January, rose to 9.9 percent in April. Managing director of the Economic Cycle Research Institute, Lakshman Achuthan says that although there seems to be a discrepancy with these numbers, they actually make sense as hopeful workers reenter the job force.