There was a good idea at the heart of this movie. Jack Benny used to do parody sketches based on movies and stories on his show. What if he had done a parody of Star Wars? That would have been okay as a sketch on a TV show, the same length as Benny's sketches. That's the heart of the error in this film: trying to make it a full-length movie. Not only did the filmmaker have to create a pastiche of an "evil space empire" with no relation to Lucas's creation, but he had to have the Jack Benny character appear on screen for a long time. The actor, Steve Norman, did a passable Benny impression. But it started getting tiring after a few minutes.
Some people have noted that the Benny character seemed gay. This was a persistent rumor during the real Benny's life, mostly because his peculiar walk seemed feminine. This apparent gayness, as shown by Norman, is about all a viewer can focus on in this movie, since all the other qualities Benny was known for - the slow burn, the supposed miserliness, the egotism, the bad violin playing - weren't referenced at all. The central bit of Benny business - the song played throughout the film called "All By Myself," a self-pity song vaguely resembling Benny's theme "Love in Bloom" - is wrong, since Benny nearly never sang as a performer.
Someday, someone may make a great film putting a Jack Benny-like character in an adventure movie. Before they do it, they had better see this film, and do a lot more research and thought about what made Jack Benny what he was.