Last night, Conan O’Brien’s linguistics guy cracked the code of the virally famous conversing twin babies, Sara Ramirez told Jimmy Kimmel about a summer-camp flashback caused by the Grey’s Anatomy musical episode, Jake Gyllenhaal’s Source Code was running The Daily Show, David Letterman learned not to interrupt Norm MacDonald, and Craig Ferguson played puppets with Matthew McConaughey. Watch our compilation to see what you missed.