What Farscape did the best
In this show, you really felt like the aliens were different. In Star Trek, it felt like a human just went back into the costume shop for this weeks morality play but in Farscape there was a real culture clash.
They looked down on Crichton and only took him in because they felt sorry for the stray cat. When someone tried to honor someone else, another person might take offense, the Blue babes pacifism and religiosity was considered lack of concern. Everyone always seemed a bit uncomfortable around each other. In short, I really liked the feel of the show.
A couple of observations about Crichton.
1. He insisted on using a lot of Earth idioms that he knew was gibberish to his alien hosts, what was the purpose of doing this? Was this to play the useful idiot or to intentionally baffle them. He would say things like, 'high noon', or 'like a report on 60 minutes', or whatever.
2. I get that the aliens looked down on him initially because he was weaker, or less advanced, had poorer eye sight, etc. However, this attitude persisted into season 2 even after he had saved the crew and ship at least three or four times by exercising both courage and perceptiveness. So I would think that the alien bigotry would start to wane at least a little bit. At some point when you see the stray cat play Mozart on the Piano you are going to be impressed.