I would not want to be hit with the cinderblock hooks Roberts was catching Waterman with at the end of the fight. Too bad there aren't enough legitimate SHWs to have a slobberknocker division. Hell, I'd be fine with the removal of HW limit, maybe.
I always thought she was the most attractive WMMA fighter.
My contribution is more recent than others, but I hardly see anyone ever remember him:
Ivan Menjivar. Guy started his career at 170, and actually retired at 20-7 after losing to Palaszewski at an IFL event before he joined the WEC and eventually moved down to bantamweight. Not a world beater, but he's fought a ridiculous whose who for someone who has never actually fought for a title. He fought GSP in GSP's pro debut, Matt Serra, Joe Lauzon, Uriah Faber, Caol Uno, Brad Pickett (another criminally forgotten fighter), and Wilson Reis.
Ivan was a case of a small but talented guy not having the division he belonged in existing during the majority of his career.
He is doing well now, still training BJJ, and has four kids with his wife.