I know a lot of these have been mentioned already, but eh.
1. Relicbane mentioned the Mentos commercial with the woman sipping "water" out of the guy's mouth. Absolutely gross as hell.
2. Any of the Butterfinger commercials where they basically act like someone will go out of their way to get some if they sense it on someone's breath. There was one where a chick is with her boyfriend at a movie, and she ATTACKS him after he eats a bite. She comes back and has it smeared all over her face. It seriously looks like vomit and shit. She has this wonderful smile on her face, as if to say "I love having vomit and shit on my face."
3. The current Jack in the Box commercial with Jack arguing with some douchebag director about wearing a hat. I HATE the look/motion Jack does when he ends his little speech about horns, and sort of shrugs his shoulders in this very dominate-eat-my-shit smug sort of way. I have a friend that does that EXACT shit whenever he's being an assclown.
4. All Axe commercials, especially the bow-chicka bullshit ones. All Axe-wannabe commercials, such as Tag. Also hate how a lot of shaving commercials have adopted this schtick, as there's one with a bunch of women shooting shaving cream all over a dude's face? Lame as shit.
5a. The extremely racist Salesgenie.com commercial that featured every racial stereotype in the book that run DURING THE SUPER BOWL, HOLY SHIT, HOW THE

DID IT GET PAST SCREENING? The douchebag CEO wrote it himself, and was on record as saying he was PROUD of it. Now all of their commercials feature sweet little kids saying things like "I love my daddy and the money he gets from salesgenie.com!" That whole site can go die in a fire.
5b. Addendum: ANY commercial where little kids are used as blatant shitstorms of cuteness, and basically say dumb shit only kids could get away with saying. Kind of like in that Futurama episode where they talk about global warming, and the little girl in the education video talks about how her dad putting ice in his drink - "Just like daddy does in the morning!...And then he gets
mad." Except where that bit was funny, this shit is just annoying.
6. Suddenlink commercials tend to be annoying, even if they have Mike Birbiglia, who I actually sort of like. Annoying jingle song, parodies of other shitty commercials (like e-Harmony).
7. There's a bunch from a nation burger place...I think it's Red Robin. They center around a really annoying tour lady taking people around this sort of test factory place, and one by one the people go crazy and try to get the burgers. So in one instance, a guy puts on a VR helmet and screams about "Monkey wants my burger!" while the tour guide lady has this arrogant smile and fires of smartass comments.
8. Any commercial for Sex in the City. I hate that show enough, and can't stand that every time it is advertised, it basically reinforces the idea that killing women randomly
might not be so bad, especially if the woman is Sarah Jessica Parker or the one that places the horny old flabby bitch on the show. Now that I think about it,
any commercial with Parker in it, since she looks like an emaciated alien with a forehead I could land jets on. And since she does a lot of work for make-up companies, it's like she's rubbing it in my face that her forehead spans the length of eighteen football fields
and has twice as much chalk on it.
9. Any of the "Are you gellin'?" commercials from Dr. Scholl's.
10. Anything made by the local ad agencies here. Good god are they horrid. I wish I could expose them to you people, so as to share the pain, and thereby alleviate some of my own torture. Generally they are nonsensical. There's some for car dealerships that just show the owner "talking" to the camera, like it was his best friend. They have horrible lighting, bad scripts, and the guy comes off like a douche. "I wouldn't sell a bad car to my neighbor....and he lives next door to me." Thank you.
11. Apple, or any commercial where it's just some looped indie song as background music to show people doing bullshit with whatever product being advertised. The songs suck.
12. Any commercial for....womanly products that shows women doing things they apparently can't/shouldn't do when they are on their periods. Use this product...go horse back riding! Take yoga! Do jumping jacks! Don't worry that your vagina is crying a river of blood and things I don't want to think about - ride a bicycle! NO. You know what you DON'T

ing do? You don't ride a

ing bicycle.
13. Any of the Peptobismol ads.
Ugh.
14. Anything for STDs that are basically like the period commercials - having a flare up != riding a dune buggy, assholes.
15. For every good beer commercial, there's ten thousand bad ones.
My treasure trove of hate is depleted for the moment.