I really liked your list, Chris; except for "Cable Guy;" I actually watched that again the other night and I still can't get into it. I cant' believe I forgot about "Magnolia" and "Top Secret." But like you said, these are not definitive lists. Some others I thought of were:
Hard Eight, Your Friends and Neighbors, Happiness, In the Company of Men, Miller's Crossing, Pleasantville, What Dreams May Come, Re-Animator, Sweet and Lowdown, Last Days of Disco, Kicking and Screaming, Monkey Shines: An Experiment in Fear, The Distinguished Gentleman, The Brood, Hamburger Hill, Prince of Darkness, Europa Europa, and Going All the Way. I'm sure more will pop up in the days to come.