Last night on Chelsea Lately, a discussion about Kelsey Grammer’s rumored sex tape turned into a lesson on amateur-porn etiquette from expert Chelsea Handler, and The Colbert Report’s Stephen Colbert showed Steve Martin a side-by-side of Ellsworth Kelly’s Green from 1951 with a paint swatch from Sherman Williams and asked the reviled art snob if he could tell the difference. Over at The Daily Show, Michelle Williams scars Jon Stewart for life, and Paul Bettany tells Jimmy Kimmel how his drunken father hilariously ruined Santa Claus for young Paul many Christmases ago, on Jimmy Kimmel Live. Watch our compilation to see what you missed.