Supposedly a great writer (never bothered), but all I know the guy for is what a completely wrong (see his opinion of Tolkien, etc) and vain asshole. I get him and Howard Chaykin jumbled up in my head for that reason. Altho, I've read some Chaykin.
Maxpocalypse
that time Harlan Ellison murdered Don Heck for no goddamn reason
to make it even worse, he later clarified he was actually thinking of Sal Buscema