When I first read the OP, I thought it was sort of an odd thread. But now that I've read the responses, I realize that there is diversity even in this. If I'm jacking, I really enjoy cumming on my chest, forehead, the headboard or whatever. (I'm a big shooter, even in my forties--although I'll admit the shots aren't QUITE as far as they were when I was in my twenties.) Something about the build-up to the orgasm followed by the warm splashes against my skin (and the occasional splat in the eye..hehehehe) has always been a turn-on for me. After a few minutes to catch my breath, I'll usually wipe off with a towel or the boxers lying on the floor beside my bed (can't stand to wear anything when I'm sleeping) depending on the situation. I do enjoy a shower wank on occasion, and used to really like to do that in college when the added danger of someone walking in on me in the dorm gang shower made it all the more exciting, but those are usually quickies, and I don't have to worry about clean up after.
Interesting thread...much more than I thought it would be at first.