Can you imagine a community where everyone is a genius? Eureka is a scientific town full of smart people. They don't need a Mensa club in their community because everytime two or more people see each other, the conversation is Mensa quality. Even the sheriff's daughter turns out to be a genius. Only the sheriff, hand-picked to go there, is average. The show is both mysterious and etherial. I'm sure I can come up with a few long words to describe it. Please give this show a chance, after a few episodes, you'll hook yourself.
The second season is just as good as the first, and all the characters have had their chances to grow. The sheriff is constantly trying to solve problems that seem to seek him out every day, while some of the scientists prove how little they sometimes know about interpersonal friendships, but we see them grow.
Time travel was a very interesting way to start Season Two. We jumped from the sheriff's daughter just starting high school in Season One to graduating from high school at the beginning of season two, quite a jump, but then things got out of control, and eventually, we find ourselves truly back where we should have been in time all along.
The directors are doing a wonderful job of letting us feel for the characters. They are fleshed out and are more than just cardboard cutouts.
What else can I say? I love this series, and highly recommend it to you, all five seasons.