maniaTV and mtv overdrive

now here's an idea i can get really excited about: tv on the web, interactive video programming online.... if you have ever heard me talk about where i'd like to see Healing Place get to go with tv, you know i've been begging for this stuff to develop. check out maniaTV's site here. Also, chris busch has a quick ref to some great info on them. and there's mtv's new one, too, mtv overdrive. anyone ever messed around with it? i can't play on mtv overdrive because they're sucking up to bill gates and are at best dragging their feet about getting it to work on macs. but i'm not bitter. just disappointed.