I've been recording hockey from the Olympics during the day on one of my ReplayTVs and watching it on my computer by streaming directly from the ReplayTV to the computer through DVArchive (thanks Gerry!) and viewing through VideoLan Client. It has taken me a while to figure out the whole direct streaming thing, but it is working beautifully now thanks to help on the AVSforum.
This way my wife can have the TV (or just avoid having to watch hockey) and I can follow a sport I LOVE on my iMac.
ReplayTV + DVArchive + VideoLan Client + Olympic Hockey = Joy
Home networking is truly a cool thing.