For the conclusion, open the paragraph with a strong, concluding transition word. The link below has a list of some different types and uses.
Sentence 3: Avoid passive voice "are portrayed" and reword just to say "the show portrays..." Also on sentence 3, try to reword to avoid ending with the preposition 'to.'
Sentence 4: Do not start a sentence with the word 'it.' Reword to give your sentence a more specific subject.
Sentence 5: You have "it its" after the 'and'. Make teen plural. I recommend changing the order of this sentence like this: "Recommended for adults and teens who want a good laugh (omit the part about learning about humans), 3rd Rock from the Sun is a..."
Final sentence concludes the review nicely. Omit "the" from "the society." It's just 'society.'
Overall, the concluding paragraph connects well with the previous body paragraphs and summarizes the earlier criteria nicely.