Who's On What Tonight? Your Guide to Late Night TV (Tuesday, June 12, 2012)

CONAN O'BRIEN: [Chicago show] Hot Rod's Andy Samberg, musician Eric Hutchinson 
DAVID LETTERMAN: Animal expert Jack Hanna, singer Patti Smith, musician Bootsy Collins
JAY LENO: Dallas' Patrick Duffy, Linda Gray and Larry Hagman, political scion Meghan McCain
JIMMY KIMMEL: How I Met Your Mother's Martin Short, The Voice's Cee-Lo Green, music group Goodie Mob
JIMMY FALLON: Won't Back Down's Maggie Gyllenhaal, Andy Cohen, musician Alejandro Escovedo
CRAIG FERGUSON: The Lost City's Andy Garcia, Magic Mike's Cody Horn