The show was a parody of The Phil Silvers Show (1955), with Arnold Stang imitating Sgt Bilko's voice for the character of Top Cat. Benny the Ball was voiced by Maurice Gosfield who played Pvt Duane Doberman in The Phil Silvers Show. Benny and Pvt Doberman both shared the same demeanor and rotund appearance.
This man has artistic temperament, like Van Gogh. You know, the painter who cut off his ear and sent it to his girlfriend.
Top Cat: Oh, yeah, to ask her why he hadn't heard from her.
In the opening title song "Top Cat" (seen in every episode) the waiter should be shown in front of the lunch box on the table. His torso is behind the box until Top Cat jumps up and runs for the taxi. At that point the waiter "pops" fully in front of the lunch box. This was related by Arnold Stang on the DVD commentary and he was very annoyed (even years later!) that the studio would let such an error occur every week.
The opening credits feature Top Cat entering a high-class restaurant to have lunch... which he picks from a construction worker working across the restaurant. He escapes from the maitre'd and the worker into a taxi and gets away (originally the series title appears on a blind TC pulls down in the taxi - later versions feature the title as TC gets into the taxi).
UK broadcast versions replaced the last shot of the opening titles with a freeze frame of TC standing next to the title BOSS CAT on a blue background. However, he was still referred to as 'TC' and 'Top Cat' in the episodes and the title song as it was not re-dubbed. The end titles were edited to remove the 'Top Cat' billboard at the start, beginning instead with the pan down to the trash can. There was then an abrupt jump where the 'Top Cat' title normally appears to the 'A Hanna Barbera Production' title, missing out TC reaching for his hat, and jumping straight to him reaching for the lid, making his hat inexplicably appear on his head. These titles looked extremely grainy and washed out compared to the episode. The UK VHS releases from Guild/Worldvision however retained the original title, although they had the same grainy opening/closing titles. These were a slightly different edit - not having the missing footage from the end of the opening titles, the missing jump cut footage from the end credits was edited into the opening titles to keep the song fully intact, but inexplicably had TC going into bed at night following the restaurant scene. The end titles re-inserted the missing footage of TC into the end credits too, but had to freeze frame the last few seconds of the footage to make up for lost footage as the opening billboard scene (as per the broadcast version) was still missing (this kept the closing song intact also).