>> The 30 Rock cameo that Calvin Klein filmed back in January — daughter Marci Klein is the show's producer — finally aired last night.  He stops Tina Fey and Jon Hamm, who are walking down the street, and declares to Hamm, "I am Calvin Klein and I think you should be my next underwear model," as part of a series of strangers who are enthralled with Hamm's good looks.