Evangelion is an anime(japanese cartoon) series all about gigantic bio-mechanical mecha's called Eva's that are piloted by 14 year old kids.
Who have to defend Tokyo 3 from terrorizing monsters called angels whose gole is to find a secret underground headquarters known as Nerv and destroy a hidden artifact discovered many years ago.
The plot of the series is sometimes hard to follow but it's still very cool.
If you wish to know more, there are tons of websites dedicated to Evangelion, most of them are links found at the Anipike:
www.anipike.com
For those of you who know about Evangelion and wish to find some really cool images go to:
www.animeinn.com/gallery/E/evangelion/index.shtml