It's super easy to rag on CAD. Here are a couple that are overdue:
GU Comics is the king of talking-heads comics, and the characters are hideous. You can see he uses a lot of Photoshop effects, giving us a perfect example of the idiom "polishing a turd".
Sorry, I edited the dialogue in this one. That one character said that one line and I couldn't resist.
Here's Dueling Analogs. The art is pretty hard to look at, and the jokes are joyless and awful. Okay, this is an old strip, but I'm posting it because at one point the guy used Jessica from the first frame as a vertical ad for his comic.... like we were supposed to find it sexy and come running to his comic.