Stephen Colbert’s live show, on the other hand – competing directly against his old Daily Show haunt – absolutely is Must-See TV. It’s not only televised live, as was Colbert’s Late Show on CBS last night (and will be, again, tomorrow night) – but it’s unedited, and Colbert, in Showtime promos, has made it clear he intends to be much freer with his language, if not his comedy, than his broadcast network employers can allow. Hence, for starters, this special’s title…