August 6, 2008: Several blogs reported that comedian Artie Lange had checked into rehab to receive treatment for his drug and alcohol abuse.New York Post: REHAB FOR STERN SIDEKICK(August 6, 2008) Lange had been scheduled to appear on the Comedy Central Roast of Bob Saget in LA, scheduled to air on September 3, 2008, but never arrived at the gig.

In 2006, Lange admitted that he had struggled with heroin addiction.Boycott Chapter 27: Details of the Artie Lange heroin revelation(September 24, 2006)

The people we see on T.V. make a habit of asking for professional help. There's even a "reality" T.V. show about it, VH1's Celebrity Rehab.

Transformers star Shia LaBeouf hit rehab on the same day as Lange. LaBeouf was arrested for drunk driving in July. Kirsten Dunst checked in for treatment in February 2008 but didn't talk to the press about it until May.

In June, Larry King's wife Shawn Southwick 'fessed up to a long struggle with pain killers. Rolling Stones guitarist Ron Wood went in to rehab in July just as the world learned he was drinking a bottle of vodka a day and was shacked up with a 19-year-old waitress.

1. Comedian
2. Original cast member of the MADtv sketch comedy series
3. Regular on The Howard Stern Show since 2001
4. Lange quit the show after an on-air fight with an assistant