When I was playing on the new snapshot, I saw something that got my attention. A glitched Steve head (obtainable via creative). To see this glitch, simply get yourself a Steve head (Creative mode, Decoration blocks tab, Head.)
Environment
Put your operating system (Windows 7, Windows XP, OSX) and Java version if you know it here
Duplicate of MC-44993 - If you have not, please use the search function in the future, to see if your bug has already been submitted. If you could not find the original report, please comment with the keywords you searched for.