Left 4 Dead 2. That shit was *entirely* DLC content, with most of its ideas/bug fixes promised additions to L4D(1) - then halfway through, they decided to hire 4 of the worst voice actors, record some unfunny dialog, and slap a full price tag on it.
Entire tripe, from start to finish - L4D had promise, it was obviously an incomplete product on release (see also; none of the pvp maps working), but when Valve said they'd fix the bugs and make the maps actually playable, I said "neat." But they never did, instead opting to charge me $60 for bugfixes for a game I'd already bought.
Fuck you, valve.
Unrelated; I don't get what the hubbub is with draconic DRM. If the game is quality, play it. Blizzard games, by and large, have all been amazing products, even back to D1 and WC2. Blizzard is greedy, and they work to put in enough DRM to deter most would-be pirates, but is that really going to stop me from enjoying Diablo 3? Definitely not!