According to Loretta Hunt and TheFightNetwork.com, these are the bonus pay outs awarded to fighters for fight of the night, knockout of the night and submission of the night at UFC 70 "Nations Collide".
Fight of the Night:
Michael Bisping vs. Elvis Sinosic
Knockout of the Night:
Gabriel Gonzaga high kick of Mirko CroCop
Submission of the Night:
Terry Etim's guillotine choke over Matt Grice
The amount of the pay outs given for these bonus categories change. Sometimes it's $5,000 per, $10,000 per and $15,000 per. Your guess is as good as mine here, but I would assume it's one of the larger amounts.