Please note these are my ranking only of films I've seen. Any films you think should be on this list may be due to the fact I've yet to watch them. I welcome any recommendations of films which should be included.
The Color of Money
Star Trek IV: The Voyage Home
Hannah and Her Sisters
Honorable Mention - At Close Range, A Better Tomorrow, Down and Out in Beverly Hills, Dream Lovers, The Fly, F/X, Hoosiers, Mona Lisa, The Mosquito Coast, Pretty in Pink, River's Edge, She's Gotta Have It, Stand by Me
Noteworthy films I haven't seen yet - Betty Blue, Castle in the Sky, Children of a Lesser God, The Decline of the American Empire, Down by Law, Henry: Portrait of a Serial Killer, Horse Thief, Jean de Florette, Lady Jane, Manon of the Spring, Matador, The Mission, Mother Theresa, Parting Glances, Peggy Sue Got Married, Platoon, Round Midnight, The Sacrifice, Salvador, Shadows in Paradise, Sherman's March, Sid and Nancy
Films I think are overrated: Ferris Bueller's Day Off, Little Shop of Horrors, Lucas, The Name of the Rose