Educational gaming machine go!
Let your kid browse the internet in the living room while you read - thus glancing up regularly and supervising to make sure nobody has goatse'd them.
Show your friends the latest stupid thing you found on Youtube.
Attached USB + Controller + Stella = Living room Atari 2600 which can be easily attached and put away when you're done (less easily accomplished in these days of LCD TVs without coax).
Cheap television + keyboard computer = information kiosk. Tired of your friends getting drunk and wanting to use Google on your computer to settle disputes on random shit? Stick one of those in your living room on a pedestal. Call it "The Last Word."
Have a little too much money? Do you like having whiteboards but you consider them lower-class? Buy a large format flat screen television, something cheap which can hack 720p clearance from some home theater "everything must go" sale, stick it on the wall and use this thing on a cheap pedestal table as an art easel. Encourage people to graffiti on your wall with the stylus on the attached screen.
Attach a webcam to one and stick it up in your windowsill and take time lapses of the seasons. Hell, if it's cheap enough, put one in each window.
Or just use one for the same thing you'd use an EEEpc other than reading on the bus to work.