:?:
Huh? Obviously one shouldn't expect to play 1080p video on any G4, nevermind a 466MHz one with a Rage 128 video card. I didn't get the impression that was what Trash80 was planning on doing, though. If all you are trying to do is browse the web and use the HD TV as a stand-in for a monitor, you don't need anything beefy to drive it.
For the record, playback of MPEG-4 video (roughly 480i) on my dual 533 MHz G4 (a Digital Audio) with a Radeon 9000 worked flawlessly at 720p.
Peace,
Drew