Loose Cannons (1990)

Mac, the two fisted savy cop finds that he's being saddled with a new partner, a known burn out, to work with him on a new and difficult case. The new partner is, Ellis, an amazing detective, one who puts Sherlock Holmes to shame with his lightning fast deductions. Ellis has a couple of problems. He keeps assuming the personalities of entire casts of Television shows. This can be a problem when people begin shooting at them.