Screen shot:

Disk image:
http://heliacal.net/~solar/bitcoin/Bitcoin-MacOSX-universal-svn-75-20100419.dmgInstallation: Run directly from disk image or drag to Applications folder
I have not tested ppc so it probably doesn't work. I got it to run on 10.5 and 10.6 64-bit Intel though.
This is based on svn but the daemon/commandline mode isn't working yet, only the GUI.
Please post any problems. If it crashes I'll try to help but screen shots, logs or crash dumps might be needed to figure it out.
Thanks
Laszlo