Even though I didn't like disco at the time, it sent me looking at a much wider spectrum of music. Blues, jazz and most of the bands mentioned in earlier posts. In the mid - late 70's I listened and saw a lot of great bands from Tull. Zappa, Yes, Return to Forever, Weather Report, Roy Buchanan and a multitude of old Bluesmen from Muddy to Johnny Winter and it just goes on.
It's funny, even though I didn't like disco much when I hear it now it's actually pretty good.