What are some that you didn't like? Might narrow things down a bit. ;)
Seriously, though, I have three recommendations:
- If you liked Sandman, the first eleven or so volumes of Fables might be up your alley. The quality slowly drops over time, but it's a really neat series about fairy tale characters exiled into the modern world by a rampaging evil empire in their homelands.
- If you liked Hellboy, some reviewers have said that Atomic Robo is a lot like Hellboy. That said, the creator of Atomic Robo has clarified his opinion that his comic is more like the Muppet Show. I would say that his comic is quite a lot like Hellboy meets the Muppet Show.
- Try out Chew. It's weird, funny, occasionally tragic, and often touching.