I loved the soundtrack. Of course, I harbor this deep secret: I actually won money (like Tony Manero) in a Disco-Dancing Contest.
My band used to play for dances in jr. high ('76-'78) and we tried to avoid playing disco at all costs. Problem was there was really no other danceable music back then. When we played to stuff we liked - Stones, Zeppelin, Skynyrd, etc. - people on the dance floor just looked at us like "you expect us to dance to that?"
So we broke down and learned some disco. ....including a couple songs from SNF.
I still have my album. Great memories of high school days.