Found this one on the CFE website as well. Looked like fun...
3 rounds for time of:
1 round of the bear complex at 0.5BW
21 pull-ups
the following link shows an example of the 'bear complex'.
http://media.crossfit.com/cf-video/CrossFit_TheBear.wmv
Let me know if you have questions or need clarification on this.
Friday can't come soon enough! Good luck to all.