I found some nice free Intel and PPC freeframe effects avail. for download here
http://www.troikatronix.com/freeframe.html
Been running the intel package with 2.5 Beta 7 on a 17" MBP
only had one crash so far while tweaking ff fx parameters out of 4 or five 2 hr sessions
Every on that I have tested (and its not all of them) worked fine with animating
parameters synced to BPM.