Here is a nice assortment of Animated GIF Files to Download, which have been collected all over the Net.
Top Secret
Evangelion Scrolling Logo
Rei & Unit-00
Shinji & Unit-01
Asuka & Unit-02
NERV
Rei I Blinking
Asuka Shutting the Door
Asuka Making a Threat
Asuka Yelling on the Phone to Kaji
Sachiel Saying "Peace!"
Sachiel Doing the HULA!