This is all about things you feel guilty about liking... this is going to be difficult, because as a rule, I'm not guilty about the things I like. There are always exceptions to the rule, but for the most part, I think "well, I like it, so what's wrong with that? It's not harming anyone."
Culinary: I think I feel guilty about my consumption of chocolate and cheese when I shouldn't eat as much of one of those things in a week. Usually I don't actually eat as much chocolate or cheese as it may seem from my constant mentioning of my two weaknesses - but there are times I will lapse. I'm not talking about feeling guilt whenever I eat them, just, when it's gone past moderation.
Literary: Hmm. My literary guilt is that I don't read as much as I should. I got into reading at the beginning of the year, but I've slipped out of it again. You see, most of the books I own are books which require proper concentration. They contain sentences which you need to think about, the occasional unknown word, convoluted plots. And I'm banned from most libraries in Adelaide. So instead of saying "I'll continue Nicholas Nickleby" I'll say "I wish I had another Poirot I could devour" and I'll go watch Kids in the Hall instead. Yes, I am highbrow.
Audiovisual: I used to watch Australian Idol, but I didn't watch the last season, so I don't think that applies anymore. I used to watch Step by Step and enjoy it, but I don't do that anymore either. I don't generally feel any guilt in the things I watch these days because I actively make a step towards watching them. I buy the DVD, I put it into the player. 9 times out of 10, if I'm watching something, I want to be. Oh, I'll go with the Farrelly Brothers movies, simply because I don't really know why I like them.
Musical: I've said this one before. Kylie Minogue. I don't just listen to it happily, but think it's crap. There are a few songs of hers which I think are good, and I know that's not the accepted way of things. Once again, though, I don't think my closeted love of Kylie Minogue music is hurting anyone but myself. And even then, I counteract her with the Beatles, the Rolling Stones, the occasional Bob Dylan, Bruce Cockburn.
Celebrity: In the last year or so, I've grown in appreciation of Jim Carrey and it frankly worries me a little bit. I remember a time where I positively despised him, and now I don't so much. In fact, I'd be more willing to view and marvel at his physical comedy than anything else. I also have a soft spot for Lindsay Lohan which bears a careful watch. But apart from that, I don't feel much guilt. I certainly don't feel any guilt over the people I fangirl like a banshee, they're wonderful.
I'm not tagging anyone, but if you want to do it, go ahead.