If it is Romney or Huckabee vs Obama then I will write in Ray Stevens and Larry the Cable Guy.
Since the death of Kennedy I have usually written in Pat Paulsen and Foster Brooks except when Reagan and Carter were candidates and I wrote in Mickey and Mighty Mouse. That was about the time that the powers that be mandated that write in candidates would not be reported to the press (at least in Tennessee) thusly squashing the "Party" party write in campaign, after all it would be an embarassment to the two party system for it to be revealed that Mickey Mouse had won the election.