I'd assume the choices are a bit limited, Di, when it comes to mushers who are "marketable" enough (I hate to have to use that word, but the ITC is probably thinking in that direction) for people to bid lots of $$$ to hang out w/ them while watching *hungry grizzly bears*.
Lance Mackey's the reigning champ, but something tells me his schedule is already overloaded; Jeff King's recogniseable but isn't always readily available due to Cabelas' committments (and right now there's the lingering shadow of illegal moose-mischief hanging over his head!); DeeDee's "everyone's" sweetie but doesn't fit the fun-to-watch-grizzlies-with niche; etc. So that's why there aren't any similar opportunities, at least from my guess.
(I wasn't the winning bidder--never even cast a bid, in fact. The knowledge that grizzly bears sometimes eat people was enough to make me say "Not me, no way, not even for a chance to schmooze." I just hope that whoever won appreciates the whole experience and says "Thank you!" a zillion times.)