Weird/surreal/esoteric/mind-bending comic recommendations?

Title. I like weird stuff that challenges the way you think. Not much of a traditional comic book reader, but there are some that have really gripped me lately (particularly the more out-there stuff by Moore or Morrison), and I'm looking for more stuff like that.

In the last couple years I've read:

The InvisiblesThe FilthFlex MentalloThe SandmanPrometheaMorrison's Animal ManTransmetropolitanThe Incal

On my to-read list so far are Moore's Swamp Thing and the new Absolute Martian Manhunter. What else needs to be on the list?