Henry V will be repeated on Afternoon on 3 today (via @clemencybh). The recording is from this broadcast in June.
He was the presenter at the Sheffield City Hall Christmas Concert (14 December). This Storify contains a picture of Sam and positive tweets about his presenting.
He read passages by Richard Feynman at Brian and Robin's Christmas Compendium of Reason on 12 December (Robin Ince's blog).