In the opening scene of Thank You, Jeeves, we hear a big swing band and David Niven is seen playing the drums. The camera zooms out, and we see that in his "flair", he continually drops or throws his drumsticks over his shoulder, but miraculously, a stick is replaced in his hand and he keeps playing. We also see that he's alone in his room; there is no big band accompanying him. And he's a terrible player! And his valet, Arthur Treacher, is mildly standing by with an endless supply of drumsticks, waiting for his master to lose one so he can place a replacement in his hand. It's pretty hilarious.
Arthur Treacher, known for his many roles of servitude in Shirley Temple movies, plays Jeeves in this 1930s comedy about the random adventures of a gentleman and his valet. David Niven, in one of his first starring roles, plays the gentleman. The timing that bounces off the two is priceless, and much of the film feels ad-libbed in their casualty and naturalness together. While The Niv is wealthy, idle, and in search of adventure, Arthur Treacher is always there to lend a helping hand, hence the title.
While there are some hilarious moments in Thank You, Jeeves!, the appalling racism that was present in many 1930s films kind of ruins the rest of the film. The two leads pick up a hitchhiker, Willie Best, and he's constantly treated and portrayed as stupid, ignorant, and as a blight on the rest of the story. It's pretty awful, and had the men picked up a white hitchhiker, I'm sure the plot would have included different gags.
However, if you love Arthur Treacher, or if you want to see a young, hilarious David Niven, you can sit through this hour movie for the good parts. Just know what you're getting in for when Willie Best shows up