User blog comment:SpilledTea/Surprise!/@comment-2072405-20130830110741

Honestly that's just one of many random guesses fans have made.

Some even thought it may be Robot Chicken too.

All Jason DeMarco has told us about the surprise is that it's adventurous: https://twitter.com/Clarknova1/status/368240180500508672

And will confuse, annoy, disgust and delight people: https://twitter.com/Clarknova1/status/368243121928163329

So it could be anything.

Though I have to admit: https://twitter.com/Decipher210/status/371663387081842689/photo/1 Getting the TV Guide to say 'Surprise' after 2.22 is a brilliant way of covering it up.