I was really upset by this season finale nothing really exciting happens in this episode.
The Penny and Leonard storyline was funny. And it was nice to see how much their relationship change them;
The experiment made by the gang with the moon was a funny part with Penny's new boyfriend who was really excited about this but did not understand a thing of what they were doing! This episode shows us a new face of Penny: she is not that 'blond' that she looks like and she has learned a lot of things by staying with the boys.
The part with the Internet dating was funny too because everybody wasn't expecting that they found the perfect match for Sheldon : a girl just like him!!! I hope she will come back next season.
This episode was nice but not good enough for a season finale!