One Night in the Tropics (1940):
Features Abbott and Costello in their first film together, but they are not the leads. In their next film `Buck Privates' the following year (1941), they would star in their first leading roles.
In this one, however, they do steal the show with...More
Keep 'Em Flying (1941):
When a barnstorming stunt pilot decides to join the air corps, his two goofball assistants decide to go with him. Since the two are Abbott & Costello, the air corps doesn't know what it's in for.