Thanks OP for posting on some of the many people who've died on Skyline. I'm going to add a few I remember just offhand: the same summer the 28 year old guy and the college professor died coming down Skyline, another guy who was wandering around up there (he seems to have been mentally ill) also died of heatstroke. His body and the body of the college professor were found almost on the same day. I happened to talk to one of the PSMP who had found the bodies and he said they were burned almost black (they were caucasian men.) The paper mentioned that both bodies had to be soaked in brine (i.e. rehydrated) in order to get usable fingerprints. The professor actually made it back down but died outside the fences of the Tennis Club where he was found the next day. Probably he was too delerious to call for help.
I"m not giving these details to be lurid but to impress upon people how horrific it is to die of heat stroke. Apparently your brain literally cooks. They say you have horrific hallucinations. I can't imagine a worse death--really.
There are also people who've died of hypothermia (I think it was in 05 that a man tried to climb up and got caught in a storm. He was found dead at 4500) and falls (I think it was in 03 or 04 that a man slipped on the ice at the traverse, hit a rock and died.) A man was found a few years ago at about 1800 who had died from a fall from a rock the previous year (no one had found his body at the time.) There is also a homeless man who I am pretty sure is dead up there somewhere around the shady slope (some on the board perhaps remember "the hunt for Crazydude") Emin found a cave above Dry Canyon the guy had apparently been living in. I'm sure there's more we don't know about.
These are all the deaths on Skyline, in the last ten years, that I can remember off the top of my head. I'm only counting deaths above the picnic tables. I'm not really counting the fairly numerous people who die on the lower portion, i.e. The Desert Museum, although perhaps I should. There are deaths there every few months, from some combination of heat/heart attack, which will probably turn out to be what killed the guy who died on Friday afternoon.
As for rescues, I literally can't remember how many there have been. Two of my close friends have been rescued from Skyline (on separate days, both fell down the traverse ice.) As a local who reads the paper, it seems to me that there is one or two pretty much every other week, on average. My 'favorites' have been the numerous groups of Marines who keep getting rescued.

Q: How many therapists does it take to screw in a light bulb? A: Only one, but the light bulb has to want to change ...