Densha Otoko

Densha Otoko is a very funny Japanese show that's supposed to be based on a true story. A bit of intro from wikipedia:

Densha Otoko (電車男, translated as Train Man) is a Japanese movie, television series, manga, novel, and other media, all based on the purportedly true story of a 23-year-old otaku (Japanese geek) who intervened when a drunk man was harassing several women on a train. The otaku ultimately begins dating one of the women.

The event, and the man's subsequent dates with the woman, who became known as "Hermès" (エルメス, Erumesu), was chronicled on the Japanese mega-BBS 2channel. This led to the compilation of the relevant threads in a book, followed by several manga versions, a movie, a theatrical play later released as a DVD, and finally a TV series.

Densha Otoko is a popular example of the "nice guy" class of Japanese geeks who wish to lead normal lives, but are too shy to find a girlfriend, or speak openly anywhere but online. The television series uses a large number of computer-bound extras.

There's a movie and a drama version. I'm watching the drama version now. Here's the starting part of Episode 1 to get you going.