I love it when two or more Internet memes get together and have a bizarre little baby. I noticed this back in maybe 2000, with the launch of amiallyourbaseornot.com (no longer active; a mash-up of "Am I Hot or Not?" and AYBABTU).
With the acceleration of configurable culture overall, of course it's difficult to keep track of all the new memes, let alone their wonderful little hybrids. But I find this one particularly interesting -- the oft-re-subbed Hitler's bunker scene from "Downfall" and perhaps the most frivolous Internet trend of 2008 - Rick Rolling. (A few weeks ago, I posted an awesome remix of Barack Obama being Rick Rolled).
Anyway, here's the runty little offspring -- almost too cluttered with in-jokes to live, poor thing!