Looks like people have already answered him.

I like the PS3 browser; it handles youtube, myspace, windows media player, and flash videos very well. I haven't tried it on any quicktime sites, yet; I don't know if it'd work.

One of these days I'll get around to installing linux on it as well, since there's a free compilation targeted specifically to the PS3. Sony was nice enough to include a partitioning utility for the thing, so you can run dual OS's w/o any additional headaches (other than the usual that come with linux).