Here's some AA WRs from 2000-2009 who didn't pan out in the pros:
Snoop Minnis, FSU
Jabar Gaffney, Florida
Josh Reed, LSU
Charles Rogers, MSU
Reggie Williams, Wash
Rashaun Woods, OKST
Braylon Edwards, UM
Mike Haas, ORST
Jordan Shipley, Texas
Go back to the late 2000s and who was putting money on KSU's Jordy Nelson being one of the best of the next decade in the NFL?!? Insane. Utter coin toss, I swear.