Michael Sheen (who plays David Frost) in Frost/Nixon has made a few comments about the filming, which has since wrapped up. No mention of Matthew, though. I hope Oliver Platt doesn't mind being called Oliver Plant.
He explained: "One of the weirdest things was shooting in LA at Universal Studios and having to recreate LWT's canteen in the 1970s. That was a real surreal day for me, with pictures of 'On the Buses' up on the wall and 'World of Sport', and Dicky Davis when he was a young man - that was a peculiar experience."
Read about it here.
