Naughty Dog I suppose, I won't buy all their games, But I will certainly play if I have the chance, their series have tended to be sorta samey but damn entertaining and fun to play. I am really looking forward to The Last of Us though... So far they are the only developers who've never made a game I wouldn't love, but like I said, I wouldn't really wanna buy all the games, because the while each series has been pretty different the games are usually too similar to the other games in the series to really warrant a purchase.
There are very few other developers who I wouldn't ask what kind of game it is before someone offers me a chance to play...
EDIT: I forgot
Durgiun said:
This also, I really don't care what kind of game they make, I will want to play it, but maybe not buy... LA noire is a good example, I really do want to try play it (I've seen it be played) but I doubt I would really enjoy it enough to buy it.