Dave O'Brien (original name David Poole Fronabarger) is always funny in those Pete Smith Specialty shorts of the '40s and '50s. He typically portrayed a long-suffering put-upon "everyman" husband, etc. Normally at least some pratfalls were involved. He was definitely a master of being able to perform all sorts of falls, hard impacts, and general basic stunts without killing himself. And he was always truly entertaining doing it!

From Wikipedia's Pete Smith article, here's a paragraph about Mr. O'Brien's involvement in the Pete Smith Specialties:

In the 1940s, movie stuntman and actor Dave O'Brien became the primary focus of Pete Smith Specialties. The hapless O'Brien would personify everyday nuisances: dealing with pests at the movies, demonstrating pet peeves, tackling hazardous home-improvement projects, and other problems with which the audience could identify. O'Brien's scenes were shot silent, compelling O'Brien to express his satisfaction or frustration entirely in visual terms as narrator Smith offered get-a-load-of-this commentary. O'Brien knew the format so well that he also directed many of the shorts, under the name "David Barclay." He staged many of the sight gags himself, taking stupendous pratfalls for the camera....

Dorothy Short, who ongoingly played his wife, was his real-life first (from 1936 to 1954) wife.

By the way, it never occurred to me, until today seeing him in 1948's I Love My Mother-In-Law But..., that he, in real-life, apparently wore a toupee. In that comedy short, he removed a totally convincing-looking (like hair that was his own) toupee (that was how his hair always nicely looked), and it obviously really was his own bald head top that got revealed.