Doctoring the TARDIS

Matt's thoroughly delighted with the levitating TARDIS he got for Christmas.

I have to admit, I think it's pretty cool too.

But as he pointed out, you have to be careful with it - otherwise it could spin off uncontrollably into the space/time Vortex. To the non-Timelord, this looks a bit like it getting stuck on the wee magnet at the top.