All of Alec Guiness movies are wonderful
Some of my favorites are:
The Lavender Hill Mob
The Ladykillers
Situation Hopeless But Not Serious
Kind Hearts and Coronets
The Bridge on the River Kwai
The Scapegoat
Little Lord Fauntleroy
Don’t overlook Alec in: The Captain’s Paradise.
Great acting, very funny and a bit of a twist...