All of them? Shit. I should preface this and say that context is king, and being aware of my biases allows me to shut them down (or try to, at least) so I can learn more about people/things which can ultimately eliminate the biases.
1) Fantasy series are a waste of my time because, despite potentially good characters and plots, I can't get over the whole 'Everything can be solved with magic' thing. It depresses me because magic isn't real, and I'd much prefer Sci-Fi where (if the author has done their research) at least I get a glimpse of the POSSIBLE.
2) Every time I see a morbidly obese person I feel sad because they're wasting their potential. Doubly so if they're using a scooter/cart but have perfectly functioning legs. I don't necessarily see them as less of a person, but I see them as a weaker person. I lose a lot of respect for them if they've turned introverted and cranky because of their morbid obesity.
3) I think long-held traditions have produced generations of women who mostly don't know how to pick-up/date men. It doesn't help that I'm in a highly religious state, so most of the gals around here wouldn't ask a guy out even if they had a Lady Chatterely crisis every time he came into view.
4) In the same vein, I think a lot of women mistakenly believe men are more simplistic than they are. Not everything can be solved with sex or steak, and complex emotional issues (which most men are never taught how to appropriately deal with in the first place) can have serious side-effects that are only extenuated by the complete stereotyping of a loved one.
5) Non-Caucasian people cause me a lot of anxiety. Not the 'fear' anxiety, but the 'Holy shit I'm not racist, but you can't tell that from looking at my shaved dome and beard so let me overcompensate with niceness or completely ignore you' type. This is why I can't pickup smokin' minority hotties.
6) If I have a reasonable idea of how to perform a task, I don't implicitly trust others to do it. I have a hard time letting people I don't know well help me with anything, from digging a hole to building furniture.
7) Pseudoscience practitioners or practicers aren't as good as people who actually do research, to me. I know, quite innately, that it's a problem of misinformation 99% of the time - and will go to great lengths to point that out with evidence to support the right conclusion, but every single time I hear someone use the phrase "toxins in the body" I ask myself how the populace got this stupid.
8) I avoid Wal-Mart like the plague, and think less of those who shop there constantly. I don't like their business practices, I don't like their hiring practices, and I think the owners are fuckwads who could use a good dunking in a frozen river. To me, it represents total hypocrisy and materialism.
9) I do have a bias against Republicans, but only if they support the current regime/picks blindly (Anyone who reacts to "Socialism" because it SOUNDS like "Communism" needs to open a fucking history book). I am developing a bias against the same sycophantic Democrats.
10) I don't think longboarding is a viable means of transport in crowded areas. It's becoming more popular in my city, and for a while I've seen kids longboard down roads as if they were cyclists... Cyclists sans brakes, helmets, and precision. It's worse on the campus near me. It's all on a hill, so students will often just longboard down from upper campus to lower campus... casually scaring the shit out of pedestrians and bikers. The best part is when one fucks up and bails, sending the longboard flying off at high speeds to test the reaction time of everybody around them. It's enough for me to want to smuggle a circular saw onto campus and just cut all the boards in half.
11) Pot smokers. This is mostly because of the arguments for legalizing pot. "OMG it's not as bad as smoking or drinking" - which is a fine argument for outlawing smoking and drinking, but not legalizing pot. "OMG it doesn't cause cancer and it's not addictive" - Yes it can and yes it can be, I know; I've read the studies. Studies from countries where pot is legal, no less. "OMG no one's going to get hit by a high driver... LAWLSROFLWAFFLECAKESROFLCOPTERFFS... I'd drive like 15mph while high." Because slow moving objects are totally less of a hazard than fast moving traffic hazards, and cars stop becoming deadly at any speed under 20mph when plowed into pedestrians on a sidewalk. "OMG it would totally like, cure all of Meixco's drug cartel problems"... assuming the Mexican drug cartels were dumb enough not to switch to any other illegal merchandise.
12) People who watch FOX News or read the Huffington Post while taking either as 'News' and not 'Partisan crap disguised as news.'
13) Defeatists who proclaim both political parties to be effectively the same, so why bother with either of them/voting/Democracy/whatever.
14) Old people who think there's a "War on Christmas" or have convinced themselves things were better before the present, recounting some idealistic setting decades in the past when what they really mean is "I wish everybody was white and Christian again." There's no excuse. Being old does not make you less intelligent, and does not give you an excuse to be an ornery old bastard. If anything, being old gives you LESS of an excuse since you've lived for several decades and have had experience in adjusting to change!
Phew, I think my bile meter is drained for the day. Thanks anonymous thread creator!