Do you know how to solve a Rubik's Cube (or know someone who can)?
Numberphile about the cube and would love to feature a few cameos from our viewers.
Email me a short video (it doesn't matter if it is a bit rubbish or just filmed or your mobile phone!)
I'll try to make sure you get a brief appearance in the video.
The email address is firstname.lastname@example.org
PS: A video is best, but just a photo of you with a Rubik's Cube, past or present, would also be nice!!!