But now, in 2014, Entertainment Weekly has caught up with the New York-based architect to get his reactions to LeBron James returning to his hometown team, the Cleveland Cavaliers.
Mosby (as well as Josh Radnor, the actor who plays him) hails from the Buckeye State, as does James. The architect did not take James's 2010 decision to leave Cleveland for Miami well.
In the video above, Mosby reacts with outlandish joy at the free-agent signing, with no knowledge that, a decade from now, he will have to watch the woman he loves die in a heart-wrenching, never-explained illness.
See Ted's fleeting moment of illusory happiness, above.