Golden boy William Holden bagged an Oscar for his portrayal of resident entrepreneur/stool pigeon (?) in a POW camp during WWII. Entirely deserved it too, and I suppose Billy Wilder deserves most of the credit. Though not a fan of war movies, this is one of two favorite war flicks--the other being The Bridge on the River Kwai (another Holden flick, but he's not the reason I like it--Alec Guiness is).
9/10