My middle brother was in the hospital when he was fairly young and he came home with a comic book named "Kimandi, Last Boy on Earth" (or something similar - I didn't look it up).
I know my brothers and I read that one for awhile. It's the only one I remember.
I'm not a huge fan of graphic novels as an adult, although I will skim them if they come across my hands. I know I have one of the Dresden file collections - something about the Jungle?
I've borrowed a few of the Harlequin inspired graphic novels from the digital library - I just had to see how they could possible turn a cheesy romance novel (these are all taken from their cheesiest line - not all HQN books are cheesy) into a comic book.
I remember one was kind of fun and made me want to find the actual novel it was derived from - but in a campy definition of fun. I couldn't imagine collecting them.