1987 Donruss Greg Maddux PSA-9 [$9.99 plus $3.50 s/h from Ebay].
It is funny that most the mainstream cards I clamored for back in the day aren't worth much anymore and I don't have to have a millionaire's budget to recapture my nostalgia.
I bought a copy of this card for $6 in the early '90s, but it was off-center. This one is a more attractive copy, though the value has softened over time. Still it is nice having a rookie card of one of the best pitchers of his generation, whether it is worth $50 or $5.
Check out that 'porn star' mustache on Maddux...