Actions are in the anim_actions.xtbl
Some cool ones that are listed are - as follows:
"blazin end", "breakdancer backspin", "breakdancer poplock", "brotherhood insult c", "cell take pic", "construction roadsign stop", "drunk beg", "drunk drink", "drunk piss", "drunk walk fall over b", "drunk walk stumble", "energy blast", "fight club end", "fight club start", "flashbang a stand to", "fraud_dive_a" - thru -"fraud_dive_f", "freefall collision", "fuck buddy kinzie kinzie" (well actually any of those), "genki end", "genki reaction", "hail taxi" (just for shitz-n-giggles), "horrified a" - thru "horrified c", "idle fix hair", "idle flirt", "inflato end" (not sure if this would work though), "josh door fail", "m0 obl bash action", "m00 crate kill player", "m00 crate kill vic", "m02 breakfast pick up fork", "m02 breakfast eat", "m02 player eat breakfast a", "m02 player eat breakfast b", "m02 stub toe", and so on and so on....
Out of those
I'm guessing
drunk, breakdancer, blazin end, F buddy..., genki end, inflato end, and m02 player eat breakfast a or b, and fight club end would be good ones.
Oh and I think the reason it keeps crashing is you didn't separate the taunts from the comps. You added comps and taunts to the top, so the system see's... x set of taunts, x set of comps, then the original x set of taunts, and x set of comps below it and it just crash's.
Add the taunts in the taunt area, and comps in the comp area and it probably wont crash... Just an idea.
EDIT
After testing, most of those don't work... trial and error.
Blazin finish did work as well as hail taxi, but that was about it.
I really really wanted that Eat'n Pancakes as a taunt... oh well.