Have you tried Quake Live yet?
Not yet.
Quake 2 caused 'sim sickness' for me, Quake 3 (great engine) just didn't hold my interest, Quake 4... Same; (Not so with Prey... That one I liked a lot!).
I'd not heard of Quake Live until you mentioned it. It sounds great that its a free browser game. I haven't played it yet but reading this [below] sapped most of the interest in it from me. :shrug:
The game is also censored to remove blood, gore, and satanic references that were found in Quake III Arena and is the only game in the series that was developed by id Software internally to be rated T by the ESRB.
It seems that over the years ~after Quake 1, that I've liked games made on the Quake engines, but never the Quake games themselves. :confused:
I still have Quake 1 installed and like to play it.