Bully must rank as the worst Rockstar game after State Of Emergency !!!
Menace + Blood Money (as DMA genre busting side scrolling shooters, r-type eat your heart out) Lemmings (as DMA quality set of puzzle games) Body Harvest (again as DMA began the trend for openworld/sandbox styled gaming, about as under rated as they come gameplay wise) Grand Theft Auto series (all of them from the top down versions to the genre breaking III/VC/SA/IV are fantastic, such a shame they never brought their Stories offshoots to the xbox), Midnight Club series (great fast paced racers), Max Payne & Manhunt (a touch more average but both heaps of fun) Table Tennis (just table tennis but wow did they really nail it why did they never tackle other sports sims) Red Dead series (like GTA another fantastic set of games with so much depth of play) L.A. Noire (more inventive jaw dropping stuff).
You can't fault them, with the exception of the dire State Of Emergency they've not made a bad game (they're like the gaming inequivalent of Pixar). As for Bully do we really need or want a 2nd ? I agree it wasn't the worst game ever but for most part it was pretty much forgettable and like some have already mentioned the lead character was annoying.