This list is outdated. If you want A2DP, upgrade to Leopard.
Here is a round-up of stereo headsets reported to work with my earlier instructions, however this should be relevant for these instructions.
Reported Working (Intel)
Plantronics Pulsar 260
Plantronics Pulsar 590A
Jabra BT 620s (1 report of performance problem, Other reports of success)
Reported Working (PPC)
Bluespoon Spider Stereo
Reported Not Working (Intel)
Sony Ericsson's HBH-DS970
Omiz Combo BT headphone
Reported Not Working* (PPC)
Motorola HT820 (Static Outputted)
Motorola S9 (Static Outputted)
* It seems very likely that any headset that doesn't work on Intel Macs will not work on PPC Macs.