Let's recap renaissance man Martin's Late Show appearance: he starred in a specially-produced pre-recorded skit involving Flight 1549; he told a story about how he rules at online poker while on drugs (another skill!); chatted humorously about myriad other topics and then played banjo, well, with his bluegrass band.
On behalf of all other late-night guests who have to follow in Martin's footsteps: Screw you, nerd. Host's pet, you are.
Video excerpt up top.