It should come as no surprise to fans of "The Colbert Report" that when host Stephen Colbert visits House office buildings, he doesn't sedately walk the marbled halls like most visitors. The Comedy Central star was spotted Friday riding a bike in Longworth with Rep. Matt Cartwright, D-Pa., and tossing a football in Cannon with Rep. Donna Edwards, D-Md. Colbert was filming "Better Know A District" segments for his show. The comedian remains a popular interview for politicians. A new interview with former President Clinton, pre-taped Saturday at the Clinton Global Initiative University, also airs on Monday.