Recommend a great spy flick?

Question

I just watched Smiley's People, having gotten it for xmas. Re-watched Spy Who Came In From the Cold and Tinker, Tailor just to get ready for SP. Looking for more great stuff in this same vein.

Answer 1

A couple of old ones;
"The Man Who Never Was"
"Eye of the Needle"

Answer 2

Infernal Affaires, it's the original and better Japanese language version of Scorsese's The Departed.

Archangel is a good film starring Daniel Craig looking into a mystery in Russia.

IMDB them.

If you're looking for a series, you could try The Company. Not as good as the one's you've already seen though.