If you have seen Kevin Smith's new movie Zack and Miri Make a Porno then you already know the song I'm talking about. After a week of searching (disappointingly the song isn't on the soundtrack), I found the song and an explanation of the songs significance. Below, you'll read Smith's difficulty in getting this song in his movies.
"It’s an old song that I first heard in ‘95, when we were putting together the Mallrats soundtrack. It was actually in the film for the first test screening, but Live decided they wanted to hold onto it as a potential single off their next album (which would follow Throwing Copper). When I was editing Jay and Silent Bob Strike Back, the song had still never surfaced or been released, so I put in a request for it again. Again, I was denied. Third time, apparently, was the charm. Needed a song for that sequence in Zack and Miri and remembered the Live track. This time, the band signed off on us using the track. Took 13 years, but was worth the wait."
Download: Live - Lift Me Up