This is real good. This guy has used a PIC 16f675 to make a fully self-contained CRO. For about $5 you can build this thing that simply just plugs into any spare composite video in on your TV. Bandwidth is only a few KHz, but for $5 could you really complain?

Even more notable is that he has also reinvented the game Pong using nothing more than a 16f675!
(*Very scary)

http://members.chello.nl/r.dekker49/.../uscope_e.html

Best Regards,

Trent Jackson