First and foremost Stephen Strasburg cards. I'm always on the lookout for cards I don't have.
Second and secondmost any 1965 Gilligan's Island cards I don't have.
Cubs. Vintage Cubs, newer Cubs. Cubs I like. But not cheaters like sammy sosa. They don't get collected.
Starlin Castro in a CUBS uniform.
Carlos Zambrano autos, 1/1s, odds and ends in a CUBS uniform.
Ryne Sandberg PSA 10s (during playing years)