Conan is famously known to own a 1992 Ford Taurus SHO.
Conan is a huge fan of Arrested Development.
While attending Harvard, O'Brien was roommates with Damon Krukowski, who later would become drummer for the seminal indie band Galaxie 500. Krukowski didn't have a drum kit at the time so Conan let him use his. The kit can be heard on many of the early Galaxie 500 albums.
Took tap dancing lessons as a child.
Conan is a huge Jonathan Richman fan.