I've released v0.5 of the mac Jedi Academy script compiler, you can get it from the Tools section. It needs OS X 10.4 or greater, and should work on both intel and PPC macs. It should work much better than the old version since it's been remade using proper Raven code from the Star Trek: Elite Force SP SDK.

NetRadiant is an updated version of GtkRadiant 1.5. You can get an intel OS X version from the NetRadiant site, http://icculus.org/netradiant/, or there's a universal binary version that you can get from http://ingar.satgnu.net/gtkradiant/index.html#osx.

Here are the .map files for my two Movie Battles II maps: Doomgiver and Raxus.
Feel free to do anything with either of them.

If you're having problems running a Quake 3 engine game on a MacBook (if it makes a strange buzzing noise when it's starting up), try putting this autoexec.cfg into your base/baseq3/etmain/whatever it's called folder.

I've released v0.2 of my Jedi Academy script compiler, you can get it from here. It needs OS X 10.4 or greater.