On August 1st at 12 AM, VH1 Classic will be re-airing MTV's very first 24 hours in honor of MTV's 25th anniversary. This should be interesting, since I wasn't around when MTV first came into existance, and I'm planning to tape at least the first 6 hours.
There's an MTV Overdrive playlist on MTV.com that's made to replicate MTV's entire first hour. They even have the commercials that were aired at that exact time. It's kinda cool.