I would disagree that machnima is every bit as much of a meme as Youtube Poop.
Personally, I’m not really a fan of Youtube Poop, but I give it credit for being strong on remixes.
I’m really torn on whether or not machinima should be considered a meme.
Machinima is ripe with spoofs and parody.
Machinima often appears as simple fanfiction.
I would say that “Machnima Parodies” might make a good entry. But not all Machinima strikes me as memetic.
So even though I’m on the fence about “Machinima as a meme” I’ve got an open mind about it.
Sidenote: about two years ago some friends and I were toying around with the idea of using Garry’s Mod to create a feature-length movie that satirized the printing company we worked at. We created a lot of custom skins and wrote up about half of the script but never did anything with it. Here’s some of the test stuff.