[link|http://www.pbs.org/cringely/pulpit/pulpit20050120.html|Mini Me] - According to him, it's all about HD movies over the internet.
Interesting theory. EFF did a [link|http://www.eff.org/broadcastflag/eyetv500.php|review] of an HDTV tuner for the Mac. I tried the HD video clip of TFOTR they put up for demo on my 1.8 GHz G5 and playback was extremely choppy. Apple's [link|http://www.apple.com/macosx/tiger/quicktime.html|next release of QuickTime](due with OS X 10.4) is supposed to handle HD content, but it doesn't mention CPU requirements.