Sitcoms with unlikeable main characters

I don't think Malclom was unlikebale at all, but it wasn't hard for me to think of other sucessful sitcoms that had objectivley unlikable main characters.

Married With Children - Al Bundy
It's Always Sunny in Philadelphia - Didn't have a main charcater, but all five of the principals are a-holes
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The sun is shining... but the ice is slippery.

What about "Dexter"?

He's an unreliable narrator and unlikable character. He says he is unable to love his family, in spite of signs that indicate this isn't true. At times he does claim to care about them, yet all of his actions are Selfish. He's supposed to be smart, yet doesn't realize that what he does will make anyone he's close to a target. Even after he loses someone he does actually care for, he doesn't change. Even when he nearly drives a loved one to insanity, he never stops to consider that maybe he should distance himself from his family- he just goes right along, pursuing them, and everyone around him pays a terrible price for being related to him.

Because he kills bad people, others tend to give him a pass. But he's actually a lot like Rita's first husband in the addict area.

If they made a show about a guy who is addicted to drugs, numb to his feelings, and who sacrifices the people around him to feed his addiction, people probably wouldn't like him so much. That's pretty much what the show is at the end of the day. But with murder thrown in that specifically hypocritical people will say is justified. I keep thinking there were multiple times he could have used his skills to further his and his sister's careers, and they probably would have both been happy, but he never went that route.

Little girls shouldn't look for four leaf clovers!

Most of the main characters in Roseanne became pretty unlikeable during the last few seasons.

Two of the main characters in All in the Family were incredibly unlikeable, too.

there's an awful lot of sitcom characters i don't think i'd like if i knew them personally, but they still work out great as tv show characters and i like them despite them being horrible people (Sunny in Philadelphia is one of the best examples)

without concentrating on only the main character and instead the main characters, what shows come to mind are:
Big Bang Theory (Sheldon is annoying but Leonard is an *beep*
King of Queen - all Carrie and Doug seem to do in the last few seasons is lie to each other and just be horrible, while being very entertaining ;)
New Girl - Schmidt is very annoying most of the time
2 Broke Girls - they all have their flaws, but Max' cynicism would annoy me quickly. Sophie must be unbearable as a real person
Seinfeld - i don't think this needs much explanation
Scrubs - JD was such an egotistical jerk most of the time

there's many more. it seems like sitcoms tend to focus on heavily flawed characters, but that's what makes them interesting, no?

"Angel Investigation - we hope you're helpless" - Doyle

I never personally thought of Malcolm as unlikable. He could be whiny at times, but not as unlikable that he became downright despicable.

"Hannah Montana" (regardless of it's reputation) was a sitcom with a very unlikable main character. Miley Cyrus is quite grating and unlikable, as was the character of Miley Stewart, who was selfish, deceiving and manipulating.