It would appear many of us have different definitions of what "Classic" means. For some folks, it's from the first set they ever played - which could be something from as far back as Alpha or as recent as Saga. If I were to ask for some Classic cards to be reprinted it would depend on the era.
Pre-Fallen Empires:
B: Sengir Vampire
U: Vesuvan Doppleganger
G: Force of Nature
R: Shivan Dragon
W: Serra Angel
Fallen Empires-Alliances
B: Baron Sengir (Hi Tony!)
U: Polar Kraken - I like REALLY big creatures
G: Autumn Willow
R: Goblin Churegon
W: Order of Leitbur
Mirage Block:
B: Shaku Endbringer (sp?)
U: none - phasing was a mistake and I stand by this!
G: Harvest Wurm
R: Crimson Hellkite (I know, it's already in VIth)
W: all of the Griffins
Rath Cycle:
B: Coffin Queen
U: Ertai, Wizard Adept
G: Muscle Sliver (I guess, they'd have to reprint all of them)
R: Mogg Maniac
W: the en kor
Urza Block:
B: Witch Engine - fun in multiplayer!
U: Morphling
G: Child of Gaea
R: Shivan Hellkite
W: Serra Avatar
Whatever they call this new Block:
Seeing as I own a total of about 100 cards from this block, I really don't feel qualified to say what should be seen again in the future...
-Ferret
"...I feel so out of it..."