Time Out London has posted their list of 100 great science fiction movies, selected by a divergent array of writers, critics, and others.
Modesty, of course, forbids me from pointing out one of the contributors. (Scroll down to find out who.)
All told, it's a pretty comprehensive list, and anybody perusing its contents should find something they'll enjoy.
Derek Austin Johnson has lived most of his life in the Lone Star State. His work has appeared in The Horror Zine, Rayguns Over Texas!, Horror U.S.A.: Texas, Campfire Macabre, The Dread Machine, and Generation X-ed.
He lives in Central Texas.