In Paul Verhoeven's Hollow Man, Kevin Bacon plays a bad boy egotistical scientist who heads up a double-secret government team experimenting with turning life forms invisible. How do we know he's a bad boy? Because he (a) wears a leather overcoat, (b) compares himself to God, (c) drives a sports car, and (d) spies on his comely next door neighbour while eating Twinkies. Sadly, this is the most character development anyone gets in this slightly undernourished action/sci-fi thriller, which does boast some amazing special effects along with some amazingly ridiculous plot twists. After experimenting rather ruthlessly on a menagerie of lab animals, Bacon finally cracks the code that will turn the invisible gorillas, dogs and so on, back into their visible forms. Does it work on humans? Faster than you can say "six degrees," Mr Bacon appoints himself human guinea pig, strapping down for an injection of fluorescent-colored serum.