Joey Kent was a great one. He stands out for the plays he made against Bama, if nothing else. Everyone remembers the 1995 game, but he had a long td catch in 1996 against them, too.
Alvin Harper, Carl Pickens, and Anthony Morgan were all good and were all on the same team. Now that's a wr corps right there.
Harper-80 something yard catch and run against Auburn in 1990 was a thing of beauty, as were many of his catches.
Pickens-too many to list, but he held the school record for longest catch in 1991, again against Auburn.
Morgan-ran a beautiful post pattern in the Cotton Bowl against Arkansas, and took it 80 yards to the house.
Donte Stallworth is another good one. Man, oh man do I wish he had been the one to stay and KW had left. His best play? I dunno, he had a few, but the best might have been when he literally faked a Vandy db out of his shoes, and took off down the sideline for a long td in 2001.
TD Woods was always a favorite of mine, from Gallatin, which is just a piece up the road from where I grew up. He made a great catch on a horrible throw against Auburn in 1989.
Others have mentioned Peerless and Marcus Nash, but don't forget Jermaine Copeland. No, he wasn't the greatest, but he did make some big plays for us in '97 and '98.