So once upon a time, there were two Brads at LiveJournal: Brad Fitzpatrick (brad, bradfitz) and Brad Whitaker (whitaker).
Whitaker was the sort of guy who creeps into legendary status because his co-workers talk about him enough that people who never knew him learn of his legend and pass it on.
Whitaker is famous in the areas of LJ history that I am aware of for a) "Whitaker's Mom" and b) The Whitaker Dance.
Apparently The Whitaker Dance involved a lot of bouncing up and down and "pointing at your junk".