How big of a download is an NBA game?

Despite blogging, speculating, pimping and otherwise incessantly promoting in all forms of media humanly possible the conceptual merits of the iTunes Music Store, I've never once bought anything from it or downloaded a video clip. And I probably won't until "Grey's Anatomy" makes it's long overdue debut as a paid download.

At any rate, a 22-minute video isn't exactly a small download, so a fast Internet connection to a capable ISP is assumed. So this leads me to wonder now with the Google Video Store on the very short horizon how big the average NBA game is going to be. Even with non-overtime games that last the normative four quarters and eliminating timeouts, commercials and TV breaks, that's still at least 90 minutes of video. That's a mammoth download, I would assume, regardless of format.

Anyone got any projections on the average filesize of an NBA game?