I just couldn't resist these... they are so cute. Cute in a non-annoying way, which is quite an accomplishment...

Okay, this is the deal: each of these files contain a chibi-style Evangelion character. Once activated, the character will simply sit on top of the window you're working in at the moment, and... look cool. And occasionally blink at you. Sounds cool, no? Actually, I foud Rei by chance (likeeverythingelse) one day, and liked it, so I decided to look for the others - and to my surprise, I found not only Shinji and Asuka, but a whole bunch of'em! Lookie here...

"Readme" file - this tells you what you should do in order to get them to work. Read it. Unless you can decipher what's in the files themselves, which isn't too likely unless you know Japanese.
Asuka - has three outfits: plugsuit, the yellow dress from her first appearance (Um, can we say "panty shot"?), and school uniform
Gendo - no different outfits; he just glares at you... In short - he's being Gendo. :P
Hikari - nothing special here
Maya - nothing special
Misato - contains two expressions (outfits): Misato before 09:00 AM, and Mistao after 09:00 AM. Heh.
Rei - three outfits, namely plugsuit, school uniform and swimsuit, plus an option to have her wear those ever-present bandages... (poor Rei)
If you have an unnatural fear of blue-haired girls in swimsuits, you need this file instead of the one above; it's the same thing, only with the swimsuit option removed. I call it "The Evil Version".
Ritsuko - nothing special
Shinji - four outfits - his plugsuit, Asuka's plugsuit (*snicker*), school uniform and what looks like shorts and a T-shirt