Clooney protects himself from Leno

George Clooney went to great lengths to protect himself when he learned Jay Leno was fighting a cold, by arriving on the comedian's talk show wearing a surgical mask and gloves.

The former ER star, a notorious Hollywood prankster, made an appearance on Leno's show last night to promote his new movie Syriana, and decided to guard himself from any possible illness when he greeted the host.