I'm a smidgeon of Nintendo Fanboy, with a sprinkling of Trekkie and Star Wars and a delightful pich of Metroid ands Pokemon. Sorry, I was cooking earlier.
Now... can I be an anti-fanboy (I'm calling that yobnaf)? If so, I am a dedicated Twilight yobnaf.
As far as fanboyism goes, I'm going to add a serious note and say that fanboyism walks a very thin line - you are either a reserved fanboy (eg. you like and defend a series and will, I given a fair opportunity, attemp to passively convert someone to that series) or an aggressive fanboy (the stereotype, but much less common variety, who actively seek out points to flame a series/company etc or break a fan of a series etc to denounce it and join your ideas. This, I say, is rampant ignorance.)