This is a fun (subjective) rundown of the best spy movies.
The 2011 movie version of Tinker Tailor Soldier Spy figures high on the list, though many LeCarre devotees say the 2011 movie doesn't bear a candle to the BBC's 1979 seven-part miniseries of the same work. Here is the BBC's Tinker Tailor Soldier Spy (condensed to six parts on Youtube).
And for anyone else who's a huge fan of spy fiction, John LeCarre is coming out with a new book in a few months. I'm excited!