Meh, "I, Robot" is a movie done in the same style as Asimov's masterpiece, rather than an adaptation of a book. Starship Troopers is by far one of the worst book to film adaptations I've ever seen, in my opinion. Haven't seen "The Puppet Masters"; somehow seeing Donald Sutherland nude is not high on my priority list right now =) Haven't heard of "Destination Moon"; according to IMDB it's based off of Heinlein's "Rocketship Galileo" (which I also haven't heard of =) To the best of my knowledge, no film adaptation of the famous "Lensman" series has yet been attempted, except for some unknown Japanese version that no one's heard of with the very imaginative title "Lensman: Power of the Lens". Sounds like a flop to me; I guess it never made it over here to America.