Glad i could help

check out
www.mini-itx.com to see what people have put these mini-itx boards in

i've seen t in old c64 a snes basiclly anything even model cars

Now i'll give u some quick info on what I have installed in my car

the pc's just a mini-itx with a 80w Morex psu and a morex case.
I have a 7" Xenarc XGA Touchscreen built into a fold out LCD case so i fold it out of the radio slot (some people mould it into the dash which looks good)
thats basiclly it

i have a wifi card in the pcmcia slot on the mini-itx board and the rest is software basiclly.
What my carputer can do is play mp3/dvd/movies/phone/gps
you can use a bluetooth phone and use software that has been made for carpc frontends so when someone calls there number and picture comes up on the LCD screen and you can choose to accept it by pushing the ok button on the LCD while the phones in your pocket

it does sms and phone book so u can read the phonebook to call someone or sms someone with the onboard keyboard.
GPS is great we have some navigation software where it will give us visual directions in 2d or 3d mode while vocal directions like: in 500 meters turn left, in 200m turn left, turn left and it evens tells u if your over the speed limit
we also have a few things like dual screens etc.
I have mame installed on my carpc and i use a gamepad to play some games when im in the car waiting for someone or something along thoese lines.
You can check out some other cool stuff on
www.mp3car.com you go to the forum to see other peoples installs or to get ideas on how to install it in your car (usually someone has installed 1 in the same car as u)
As of projects you could make well here's a small list of what people have used the mini-itx boards for:
HTPC
Linux Server
DVR
Games Console
Guitar Wa Wa effects pedal (plays certain sounds when u hit the pedals)
There are alot of stuff you can use them for

My personal idea is you could make a Bartop thats so small you would use a 10" crt monitor and have enough room for controls and anything else you needed

And sorry for another SMILEY OVERLOAD

I do feel bad taking over this thread so lets stick on topic

If you have more stuff you wanna know u can PM me or you can make a topic in the everything else section just tell me hehe