DC - I've never seen "Gigot", but I agree about "Soldier in the Rain". Its quite a good (and underrated) movie that never seemed to have taken off with the public.

And while talking about Gleason's good movies lets not forget "Requiem for a Heavyweight". There were a few great performances in it - Anthony Quinn and Mickey Rooney, as well as Gleason, too. (Muhammad Ali, then Cassius Clay appeared as did some older champs like Jack Dempsey and Willie Pep).