Directed by Chris Cassidy. With Dennis Anderson, Lois Kahlert, Liam Gallagher, Noel Gallagher. DENNIS AND LOIS is a documentary about two quirky New York City characters who came together over their fervent fan-hood of fringe bands in the '70s, fell in love, and embarked on a lifelong quest, fueled by love and gratitude, to selflessly serve the creators of the music they believe keeps them alive. If you're in a band and you see them turn up a second time to one of your shows, prepare…