A card with more than one player on it
I thought I'd be different with this pick. Everybody I've seen so far has picked a card with multiple players on the front of the card. But the 1994 Upper Deck All-Star Jumbo Gold of Roger Clemens has the second player on the back.
I have this card as part of my Aaron Sele collection because it's listed in his checklist on Beckett. Don't you just love the sign over his shoulder? Is that for the players?