Man, I've been so out of webcomics for a while.
I did follow along Something Positive for a while. I'm actually surprised to not see it on here more often. It's geeky, but it's also snarky and jaded. If you read the first comic and enjoy it, then the rest of the series should appeal to you. If you don't like the first comic, well, the rest isn't necessarily as crude as that, but maybe you're not into meanness.
I also enjoyed Order of the Stick, but I think you pretty much have to be a role-player to appreciate that comic, especially D&D.
Nodwick was a lot of fun to read. It's also an RPG-themed comic.
If you're not into RPGs, PVPOnline might be your cup of tea. It mostly dealt with online gaming, but there were still stories focusing on other facets of geekery.
I read Ghastley for a little bit. It's not so much that it's good, but it's bizarre and offensive. It pokes fun at most everything, especially things in Otaku culture. Also, there's plenty of blasphemy to go around.
I also enjoyed the Parking Lot Is Full. A lot of it was just wacky bizarre shit that didn't exactly work, but when it did work, it was lovely. I believe that series has ended.
I no longer keep up with webcomics, so I can't say anything about the quality of those nowadays or if they're even still being updated.
