The first one is just crazy, don't want to give anything away just check it out. It gets pretty surreal toward the end but that's the fun of it right. It is called "Sigg Jones" and you can find it here.

The other is a two part short with some cool mega robot fighting during WWII. Its called "C.O.D.E. Guardian" and it took the guy five years to make. Here is part 1, and part 2.

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I just has to add another one for you, some animated street art. This is a really unique approach to animation, and the results are too cool. So go and check out MUTO a wall-painted animation by BLU