I haven't seen the movie, though I thought the production in New York that I saw was really brilliant. Frank Langella, fellow granfalloon Alpha Chi Rho brother, was truly brilliant, the kind of performance you see (and have opportunity to give) only a couple of times in life.
As a minor side note, comp tix to Frost/Nixon was one of the best perks of blogging I've ever received! Note that, PR people. I'm more likely to review TV pilots and theatrical productions than I am nonfiction books.