What are the bands that defined your generation

I can remember listening to In A Gadda Da Vida on KSHE95 out of St. Louis when I was a kid. They had so many requests, and it was so long, they would play it everyday, at the same time. They did the same thing with Arlo Guthrie's Alice's Restaurant. This was always, and still one of my favorites.

[ame="http://www.youtube.com/watch?v=5UWRypqz5-o&index=2&list=RDUIVe-rZBcm4"]Steppenwolf - Born to be wild 1969 - YouTube[/ame]