Are there any GameBoy Advance emulators for OS X Lion? As a prior Windows user, on the Mac I miss some popular video game console emulators like VisualBoyAdvance or ZSNES. Especially the lack of a good Game Boy Advance emulator is bugging me.

So my question is: Is there a good GBA emulator out for OS X Lion? No PPC apps please.
Here are some references. I don't have any personal experience with them.

Attack of the Mac Emulators: Retro Games on OS X, April 22, 2010

Richard Bannister's BSNES for Mac OS X. A note there indicates that it is not yet compiled for Lion.

Links to Emulators at Pure-Mac.com