Peyton breaking the losing streak to Bama, starting the game with the perfect slant to Kent that went the distance. And then later with the naked bootleg, called perfectly by John Ward as "Nobody knows who has the ball, except Peyton Manning. He has the ball, and where is he? In the endzone for six!"
The Mose run against SC was likely my favorite play, although Wes Brown's TD against Vandy last year (dragging the whole offense with him) was pretty special as well.
I can remember some special performances by Wide Receiver U, from Willie Gault to Alvin Harper to Carl Pickens to TD Woods to Stallworth and Meachem, but I can't single any out above the rest.