Walt Disney Co.'s Go.com and ESPN are teaming up on the new EXPN brand. Aimed at action sports enthusiasts, EXPN launched this month in conjunction with the sports cable network's annual Winter X Games. EXPN programming will appear on ESPN and ESPN2. An EXPN.com site features three sports channels -- Street, Water and Snow. Go.com created ads in-house. Creative team: Howard Brown, Peter Sapienza.