In Sherlock Jr., Buster plays a movie projectionist who daydreams himself into the movies he is showing and merges with the figures and the backgrounds on the screen. While dreaming he is Conan Doyle's master detective, he snoops out brilliant discoveries. <p> And in another hilarious comedy, Keaton and his sweetheart are cast adrift on a deserted ocean liner. The ship finally runs aground on a desert island where the two unfortunates are chased by cannibals. A box office success, The Navigator is also one of Keaton's most revered films.