Venus Flytrap by Toben Sutherland: flair to front flip on a QP back in 2000 or so. Also done by Wilson some 4 or 5 years later, i think he also attempted one at VT Open same year Symms won with enormous flat 5 but crashed hard to flat. Definitely saw Candide attempting something looking like that on some sort of QP, can't find video from like 2005 or 2006. Never saw one being thrown on HP by that time though.
Scott Hibbert, double backflip in proper HP run following switch alley-oop 900 quite some years ago (maybe 8 or 9 already).