Okay call me mad but I like my Laptop to be lightweight & truly portable, that's why I've got a Lattitude X200, I like my workstations to be powerful, that's why I've got a Dual AMD MP2800+ with a sys spec to die for, & I like my terminal to be light & power effeicent, which is why I'm looking at a VIA C3 system.
Yeah the C3 ain't no 3GHz P4/XP 3200+ and it's never going to step into the arena and go head to head with the 'best' that AMD & Intel have to offer but then again do you really need that power to say email, surf the net or play a DVD?.. Well no, the VIA C3 has the performence to deal with those demands and also is a lot lighter on the power draw. Am I serious, too damn right I am!
I would build one personally, then again, unless you get one of those new eden's that would involve making your own heatsink in order to avoid fans. Have you checked www.mini-itx.com? they have alot of examples and such.