Anime: Lucky Star

This anime has absolutely no plot (as far as I know) but somehow, I'm completely addicted to it. I can rewatch any of the released episodes so far twenty times and not get the least bit bored. O_O It is truly amazing and strange.

Here are a few screenshots of the Opening.


From left to right is Tsukasa, Konata, Kagami, and Miyuki. They're the main characters.