Yeah Nath, the movie was remade, here:
http://imdb.com/title/tt0454082/
I've seen Gambon before and he's not a bad actor, but I agree he's no where near the Dumbledore we knew and loved from the first 2 movies. But I wouldn't call his acting a "disgrace" Vox, I think that's going just a tad bit harsh.
George Clooney as Batman........now that was a disgrace. But seriously, my guess is Warner Bros didn't have alot of options for replacements for Dumbledore. They needed someone talented and relatively somewhat famous.
Gambon isn't a big actor but he has talent and he's doing the best he can. I can't really be mad at him though because of the circumstances, the original actor died, there's really little to get around with that.
Oh yeah, and the last movie I saw was "Short Circuit".