John Slattery to Guest Star in 30 ROCK

Mad Men - John Slattery as Roger Sterling

John Slattery is slated to guest star in 30 Rock‘s seventh episode, according to

He will be joining his fellow Mad Men costar Jon Hamm in adding his name to the roster of awesome guest stars who appeared on 30 Rock.

Apparently, Slattery will play a congressional candidate in the upcoming episode.

30 Rock is to comedy Emmys as…well, as Mad Men is to Emmys in the Drama categories. It would be quite ironic if the only acting Emmy any of the Mad Men cast won whilst on the show was for guest starring on 30 Rock.

What do you make of this news? Excited? Would you like to see Peggy or Joan make an appearance on 30 Rock? Let me know your thoughts in the comments below!

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