These guys at etri are building a linux-based home server for multimedia, wireless, LAN, fileserver, appliance control, etc
These Guys have one heck of a 2U box with 8 computers linked with a switch fabric for doing mega streaming and other applications
These guys at LTSP sell thin linux clients and handle multiple client software syncing which would be really interesting for schools
These guys at total impact sell a CD-ROM sized self-contained linux box with a cool display on the front. Saw it used in various places around the show - probably a hot product.