Pretty good
I avoided this over the years, because it looked too silly. However, out of curiosity decided to watch it today.
It's a really quirky, funny film. The situations, especially what Beldar had to do to earn money, was fun to watch. The daughter was sweet, and it was nice to see her acclimated to Earth, since she was Earth born, with her parents both being from somewhere else.
The dialogue is unusual and funny. Subtitles are definitely needed, because the aliens speak in an unusual manner and use words that are not familiar.
The acting of course would be unusual, and the supporting cast members did well. Dan Ackroyd did a great job.
The planet of the Coneheads and it's citizens were fun to watch. Quite a few familiar faces in this film.
Definitely worth a watch.