Do not buy yourself some bluetooth headphones hoping for a full stereo sound output with voice chat! The ps3 has the connectivity built in, but sadly the current firmware builds only support audio for voice chat (i.e. your normal game audio will not be passed through headphones connected via bluetooth). Sadly this is an area where the PS3 is needlessly lacking, since all the Bluetooth 2.0 / A2DP tech is in place.
This is all the more annoying considering my bluetooth headphones recommendations (from someone who has in their time spent more on all types of headphones than I could ever comfortably admit to my wife):
Sony Ericsson HBH-IS800Sony Ericsson HBH-IS800 Bluetooth Stereo Headphones
The basic form factor of these headphones is exactly what you'd want from bt headphones - small in ear design, one cable (which in my year or so of using them NEVER once tangled) - job done.
Has an auto-connect on switch on feature so will re-connect to the paired device automatically.
Battery life is a relatively poor 2hrs (due to the teensy size and therefore battery).
Can only pair to one bt device at once, and has no memory of previously paired devices. meaning you need to go through the "input the access code" steps every time you want to re-pair to a second device.
Sound quality - good clear audio, and good bass reproduction, but seems somewhat "boxed in" or less expansive than a decent set of earbud headphones.
Mine fell foul of the dreaded "dead ear" issue, where one side stopped working - sadly this happened after about 9months and I'd lost the receipt so couldn't get a warranty repair.
Sony DR-BT160AS [currently not available on Amazon - though I bought mine through the site]
Excellent audio quality (noise isolating earbud design with over ear sport-style neck band).
Excellent battery life - easily upwards of 4hrs listening.
Full call / volume / track selection controls mounted on the unit for easy "hands free" operation
Can memory of previously paired devices.
Auto-pair to last paired device.
Can be paired to multiple devices at once (for example I could pair to my ipod touch and nokia phone, so I could listen to music while riding, but if a call came in the music would be automatically paused and the phone would ring (answered by button on the phones). Music resumes on call end - handy!
I've not experienced any fade in the battery life after over 2-3 years of owning them.
Seriously only one issue and that's that they do make you look a bit like an extra from Star Trek - the functionality and more importantly sound has always won out for me though and I still regularly use them.
Google them, but there's a CNET launch article here: