No BZPPC or CSPPC, but...
* 1.25Ghz 7447 v1.2 (Mac Mini G4).
* Turbo601 PPC:
http://web.archive.org/web/19970615192834/http://www.daystar.com/Upgrades/Trb601.html (for Mac IIs - the equivalent of a BZPPC or CSPPC - MUCH more rare than either of those. Got two! I'd trade one for a CSPPC or BZPPC, but hardcore Mac fans are few and far in between, hehehe)
* Bunch of G3 Macs and accelerator boards. If you're in need, let me know.
Now, if I had an Amiga PPC board I'd use it primarily for OS4.0, MorphOS, programming (probably something OpenGLish, datatypes/decoders/encoders, drivers, porting from Linux-world or other open source stuff, secret trans-gaming project), and of course media playback (music, video), Doom & Quake.