Check out MobiSpray, using S60 phones and Python to do air painting on a large scale: http://www.mobispray.com/

how can i get a copy of it to play with?

well i could not track down a download of mobispray and got no reply from the contact email, but did find nokoshop accelerometer which looks like it dose the same thing.

http://mosh.nokia.com/content/5444138CD9F74F4FE040050A44301CEF

When you combine it with a wii remote it's starting to get interesting

http://www.mobi-pad.com/download.html

hopefully soon one of you clever people will make something so i will be able to draw in the air with my wii remote control and have the movement represented as a line in a drawing programme on my n95, maybe a save option when i press the number 1 button [Automatic renameing it] pressing the A button could start and end the line and the B button could bring up a few colours to choice from, pressing it twice brings up a few more drawing options circle square, fill etc. The - and + buttons should make the line thicker or thinner. That just leave the number 2 button.... that could be the undo button to undo the last line and the one before that if pressed twice, etc...