David Letterman devotes a good twenty minutes to clearing up his (and the nation's) confusion about what being trans means, with help from an incredibly poised and warm Chaz Bono (who I might now have a crush on. Goddamn attractive straight guys.)

Part one below, part two after the jump, Letterman does a wonderful job throughout, and don't forget—the award-winning documentary Becoming Chaz screens tomorrow night as the opening film of the 2011 Transgender Film Festival.

Thanks for the links, Towleroad.