Still one of my favorite disco tunes of all time. Thelma Houston was/is amazing. Saw her performing this song today on The View as part of Whoopi's 60th birthday celebration (may have been a rerun). She still sounds pretty good. I have a direct to disc vinyl album with this song on it as well. Better sound quality than any cd version you will ever find.
And this is another favorite disco song. And coincidentally, I watched The Martian last night (what did we do before bittorents?) last night and the song playing during the ending credits was this song. It is a fantastic movie btw. I think it was the main theme song of the movie The Replacements (2000), though not a particularly good movie.