the hentai art of the artist known as sirkowski. He had a site named sirkowski.com wich seems to be either down or just gone completely. you can see his "less sexual" work on www.missdynamite.com.
I find his style to be light and fun, but still erotic. It reminds me that, when it comes to any form of drawn porn, life-like isn't necessarily the goal. Look at #5. The concept is arousing. The execution of the idea is humorous. I like that that can be a thing.