Taxi - Season 2 Episode 21 -

Alex has a new lust for adventure after a thrilling ski trip and begins trying to conquer his fears. He first entertains the crowd at Mario's by playing/singing showtunes on the piano, then he has Tony teach him to box and spars with a talented young boxer who knocks him out. Alex still wants a new challenge, however, and announces he's going skydiving. Once in the air, Alex reconsiders, however, but reluctantly jumps anyway.