Can you tell it to do stuff like go to the fridge or nip down the offy? If it just runs around at 15mph like it's got something up it's arse then it must be the most pointless invention ever.
I'm not so sure, the Welsh language strikes me as more pointless?
edit:
This one may be a little more pointless actually
Santa Claus Detector
Patent : US5523741 Date : 1996
Inventor: Thomas Cane