If there's one thing that the return of the late night shows taught us it was this: late night hosts shouldn't grow beards.

Seriously, they just don't look good with hair on their faces. David Letterman looks like an old professor and Conan O'Brien looks like Gay Wolverine. I have a feeling that they'll both shed their beards by the end of the week (Letterman even hinted he might do it on the air). Let's hope so. As for the shows themselves, it was a mixed bag to say the least.

Here's who's sitting down on the couch on the late night shows.

• Charlie Rose: a look back at those who passed away in 2007
• The Late Show with David Letterman: Robin Williams, Senator Hillary Clinton, and Lupe Fiasco
• Jay Leno: Governor Mike Huckabee and Chingy
• Jimmy Kimmel Live: Andy Dick, Helio Castroneves, and Kid Rock
• Tavis Smiley: Will Smith (repeat)
• Late Night with Conan O'Brien: Bob Saget, Dwayne Perkins, Robert Gordon, and Chris Spedding
• The Late, Late Show with Craig Ferguson: solo show
• Last Call with Carson Daly: Mike Cammalleri, Derek Armstrong, and OneRepublic (repeat)

Note: The Daily Show and The Colbert Report return with new episodes next Monday.

• At 8, FOX has the Tostitos Fiesta Bowl, which also sounds like something you could eat. "Yes, I'll have the Tostitos Fiesta Bowl and a large Pepsi."
• ABC has a new Wife Swap at 8, then two new episodes of Supernanny.
• CBS has a new Power of 10 at 8.
• NBC has a new Deal Or No Deal, then a new, two-hour Law and Order.
• There's a new Crowned on The CW at 8, followed by a new Gossip Girl.
• PBS has a new installment of Pioneers of Television at 8, focusing on sitcoms.
• At 9:30, HGTV has a new Design on a Dime.
• At 10, TBS has two new episodes of Tyler Perry's House of Payne.
• Bravo has a new Project Runway at 10.
• Also at 10: HBO has a new Inside The NFL.

Check your local TV listings for more.