I like a game that you don't, thus I am a fanboy.
Can there be some rule that says all hate threads have to begin with the phrase "Based on both my own opinion which I falsely believe to be superior to all others, and the fact that I'm a bit of an arse, I believe that..."
Seriously, DNF, CoD, FFXIII, just because you don't like them it doesn't mean you're better than the people that do, and if the simply act of liking them makes you a fanboy then it's not really the insult that people seem to believe it is.