The Insider.com

Daniel Radcliffe, who made a memorable guest appearance in a 2006 episode of Extras, is returning to British TV in a new series that follows the lives of an army of Russian doctors after the First World War.

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And the 22 year old is getting an enviable counterpart as Mad Men star Jon Hamm is set to play the Harry Potter star as a grown up.

The series, which will air on England's Sky Arts, is said to offer up a great role for Daniel, who reportedly feels, "he can learn a lot from Jon."

Don't know about you, but as excited as I am for the pairing, this seems like the least likely TV aging since Josh Radnor turned into Bob Saget on How I Met Your Mother.