I like old vintage style cards. A Rookie card from the past would look nice.
And just saw a link for Precious Metal Gem card of Jordan...don't know how many are around...but DAAANNGGG! Look at the price!!!
Link
Precious Metal Gem Green Michael Jordan SOLD? HUPE ROYALTY
EDIT: Just wondering, Precious Metal Gems is just another brand like Upper Deck, Fleer etc etc right? I've never even heard of PMG. Are they expensive as packet prices or just the inserts are really REALLY rare?