Last night Jon Hamm went on Letterman to talk about sports and his early acting days as a set dresser on what he appears to be hinting was soft-core Skinemax porn. Hamm was probably booked before Letterman’s extortion scandal (though it’s a little late in the Mad Men season for a stop on the Late Show, hmmm), but either way it was a smart strategy: it’s almost impossible to see David Letterman as some sort of powerful womanizer with Jon sitting there next to him, dwarfing what little sexuality the old guy has left with his overwhelming Jon Hamm-ness. Yeah, this was probably on purpose.