Jerry Rice
I was sitting behind Jerry Rice on AA1499 DFW-SJC on Dec 6, 2007. At first, I didn't think it was him, since were were in the back of coach. Turns out he was flying F on a later flight, but wanted to catch an earlier flight, and coach was all they had.
Figured something was up when there were comping his food and drink. His preferred drink was Baileys on the rocks, by the way.