Jerry Rice! Marvin Harrison too. The Rams won in 1999 with Isaac Bruce and Tory Holt, both elite high picks.
Plaxico was definitely elite (#5 overall too), and he was an integral part of the Giants SB victory. Michael Irvin was a key part of three SB teams. Andre Rison was a key player for GB in their SB victory in the 1996 season. And Moss scored what should have been the winning TD against the Giants (plus Brady missed him on the Pats last possession after he beat his man deep - it would have been an 80 yard td.) TO had 9 catches for 122 yards against NE in the SB too, and Philly could have won that game. I mention all of these guys because they were head cases.