This is a market just waiting to be exploited by these companies. I think the Behringer A500(fanless) has gained some popularity amongst the HT crowd....the issue about noisy fans is true on the one hand, but if you're adding this kind of power to your system(and use it), you'll easily drown out the sound except on the quietest passages in your movies/music, I would expect.
There's some other, "inexpensive", amps out there like Audiosource and American Audio you might check out as well...seems to be a lot of similar pro amps on the market these days.
