I am driving myself crazy looking for the name of this movie. I saw a preview on a DVD not long ago (maybe 2008), and I think it was a straight-to-DVD movie. The only things I remember about it is that the trailer featured the song 'Sister Christian' by Night Ranger, and it was about a group of thirtysomethings who kind of lost their way in life (kind of a reflection on how messed up life can get).

If ANYBODY can help me, I would be so grateful.

Maybe The Lather Effect (http://www.imdb.com/title/tt0485927/plotsummary)? The song was featured in this flick.