This is tough. I don't think I can pick just one.
I really started watching BU basketball in the early 80's as a youngster. So my list is as follows.
80's---- Mitchell Anderson, Eddie Mathews, Jim Les, The Hawk, Mike Williams
90's----Funches, Chad Kleine, A.P., Deon Jackson, Roberson
Last Decade------ Cello, JJ, Cellus, Ruff, J.C., Zach Andrews, Will Franklin.
So that is my long list. So hard to pick one, or even a couple, and I wasn't even around for the early years that BU basketball on the national map. Probably Hawk and Massive Mike would top my all-time lists.