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Late Night Highlights: Adam Lambert, Chipmunk Lessons and Cussin' Mrs. Santa

With George Lopez, Stephen Colbert, Chelsea Handler and Jon Stewart already on holiday break, the remaining P.M. hosts scrounged up enough holiday cheer for the entire after hours schedule last night. The Jersey Shore cast mates were not available for another reenactment of the Christmas story, but Horatio Sanz and Julian Casablancas were game for some yuletide fun. That video, and the other moments you missed (including Betty White!) while still washing off that bronzer, after the jump.

Smokin', Drinkin', Cussin' Mrs. Claus

Kate Flannery stopped by the Jay Leno Show last night to joke about snow jobs, K-Y jelly, eating reindeer and Roman Polanski. Hey, at least it wasn't a blatant Wendy's plug.

Santa White

Craig Ferguson's favorite guest, Betty White, stopped by the Late Late Show last night dressed as a Salvation Army Santa to talk dirty with the Scottish host.

Intoxicated Celebrity of the Decade

Jimmy Kimmel Live took the liberty of crowning this decade's most delightfully drunken star.

Christmas Today

Jimmy Fallon's former Saturday Night Live co-star Horatio Sanz joined the Late Night host onstage last night to perform their SNL classic "I Wish It Was Christmas Today" with the help of Julian Casablancas.

Chipmunk Lessons

Last night, Christina Applegate stopped by the Tonight Show to teach Conan how to talk like a chipmunk -- it's not as easy as you think.

Adam Lambert Defends ABC

The controversial AMA performer stopped by the Jay Leno Show to talk about his short-lived college career, ABC's reaction to his performance and Lambert's supportive family before performing "Whataya Want From Me."