First allow me to enlighten you to the rules of the GRRM forums
1. No making fun of Georgies weight. Sure he could put a piece of pizza down and get the book at sooner, but it wouldnt have the same impact
2. Boaz isnt allowed to call you an idiot for 18 posts. I think thats the number, but if he calls you an idiot on your 4th post it must be 4....and if he hasnt called you an idiot yet the number is higher...just wait for it.
3. No political crap. No matter how wrong you are keep it to yourself.
4. Dont poke the Tree (Re: The Smiling Weirwood) You wont like him when he's angry. And by poking I mean dont misspell anything.
5. Dolorous Edd is the funniest character ever. Any dissenting opinon will get you eaten by vegetarian pygmies...dont ask, it isnt pleasant.
6. Oh, and anything else I say later
Thanks
Aegon the Unfunny
In regards to your question, I recommend the Wild Card series if youre into the Superhero genre. Complicated characters with interesting powers....its splendiforous....
Outside of that I have read nothing by Martin save the Dunk and Egg short stories...theyre in comic book format so I dont know if that would be your thing. But at least its interesting to see the forefathers of the current crop Westerosi hero...