The last volume of Nuku Nuku ends on a positive note, in opposition to a lot of comedy anime that tries to instill some drama into the last episodes of a series. Nuku Nuku's zaniness and good clean fun continues until the end of the dvd.
First up is a Valentine's Day episode in which the rest of the cast is trying to figure out what boy has captured Nuku Nuku's heart. Spoiled rich girl Chieko, jealous of the attention, buys up all of the chocolate in the city to keep Nuku Nuku from declaring her love. Then it's on to a semi-musical episode as the class of Maneki High School film an amateur sci-fi movie to celebrate the end of school. The last episode concerns a giant cat faced shaped asteroid heading for Earth. Mishima Industries sends a cluster of nuclear missles to destroy it but as they hit the asteroid, their resident evil scientist realizes that he forgot to turn off the safety mechanisms. It's up to Nuku Nuku to pilot the last missle or the Earth will die! It's not as dramatic as all that.
This series was hilarious. And it did comedy the old fashioned way. With wit and intelligent writing, not fan service and harem comedy. It was very refreshing because it was so good-natured. Nuku Nuku is like a Jerry Lewis character, bumbling and idiotic but well-meaning. You really come to care for the dilemma that she faces in becoming more human but at the same time having to save the city and her friends from the terribly inept Mishima Industries. Even though a lot of the jokes play over and over again, it does not decrease the pleasure of viewing this series. Highly recommended.
I would also recommend the first one volume series Nuku Nuku Collection which features Nuku Nuku's origin and an alternate telling of her adventures.