Matt Smith, Karen Gillan, Arther Darvill autograph copies of the sixth series

Matt Smith, Arthur Darvill and Karen Gillan share a light moment.

What could be better than owning a copy of the sixth series of "Dr. Who?"

How about owning a copy that was autographed, in person, by Matt Smith, Karen Gillan and Arthur Darvill? The three actors did exactly that at a London store on Monday.