I'm one of those strange anime fans who actually prefers dubs, or should I say GOOD dubs. I'm usually just too lazy to want to read subtitles and often feel that a solid acting team can make me appreciate the character more than coping with a Japanese voice and reading the text. But it depends on what you were exposed to first. For anime overall, it was dubs. But for, say, NARUTO, it was subs, so the Viz Media dubbed episodes "sound" odd.
I agree with TheVileOne in the sense that since the market has shifted exclusively to DVD since about 2002, the choice between dubs and subs isn't nearly as dire beyond personal preference. Back when anime was strictly VHS, you would need to find a seperate tape for a dub or sub, and the subbed episodes, at least in my experience, were often more expensive (by about $5-$10). Now that a DVD can have both dubs and subs as a simple LANGUAGE option for the same price, it's not as big a deal. I started getting anime back in the early 90's before a lot of current otakus were, ahem, "spoiled" a bit by DVD's, CN and illegal downloading.
For comedy series I find that a dub is more essential; I've tried watching some LUPIN THE THIRD movies in subtitles and it just loses some of the charm that a solid VA can deliver. The issue of course is that a poor dub is a poor dub and the notion of it being dubbed won't aid in the quality.
Plus, I've liked cartoons since I was a kid so I always have a soft spot for voice actors, so I like dubs because it allows me to hear a lot of them do some work, and remember actors who have been "good", as they often move around. For example, it brightened my day when I read the cast list for X-MEN EVOLUTION and saw that so many old time Viz actors had roles in that show, especially Mark Hildreth (he voiced Warren/Angel on EVOLUTION but also was the voice of Terry Bogard from the FATAL FURY movies, which was the first "series" I got into).
So I'm pro-dubbed. Nothing helps a good anime stand out for me than a well written script that is well acted by dubbers.