For those of you unaware of Chaykin's work outside his less-than-stellar artwork (which is still better than a lot of "better" artists *coughJoeMadcough* because of Chaykin's storytelling ability, which often is more important than actually drawing a nice picture) you could check out Bite Club, which isn't his best piece of work. Then again, you could go all the way back to something like Black Kiss, which is pretty much X-rated. It's a twisted story you'd expect to see in a really far-out David Lynch film, complete with transgendered vampires and a bizarre male/female/shemale love triangle. Really strange and graphic stuff, but if you're old enough to read such a story and appreciate it without going "ew, icky", it's very well done.
Chaykin also wrote (and illustrated) American Flagg, which was somewhat of a cult classic in the 80's. It was very much rooted in 30's/40's detective/gangbusters lore, done in a film noir style that I tend to enjoy very much. He did the same kind of work on
Blackhawk for DC around the same time, I still own all 3 issues of that mini series and I can still pull that out and enjoy it today. It was some of the darker/more adult work coming from DC comics back then. Even though I was probably only 7 or 8 years old at the time it was released, well... I was always a weird kid. The darker, the better. Plus I was watching a lot of old gangster films from the 30's and 40's with my grandfather, so all of that material was fresh on my mind. Chaykin apparently loves that period of history and his original material often reflects that.
I'm not a huge fan of his art (though, like I said, his strong point was always storytelling as opposed to correct anatomy and pretty pictures) but he's a solid writer. Black Kiss is one of the rare gems in my collection, an obscure comic that always raises an eyebrow when other people read it.
Plus, I love Squadron Supreme. I'll read this anyway.