Following up with last year's edition of the best April Fools gags, it seems all the greatest gaming companies have sprung even less believable, yet more awesome, jokes for this year. Let's start where it always starts: Blizzard!

Blizzard Kidzz - Zergling Teaches Typing

Blizzard's newest venture brings Zerglings and Marines to the forefront of education, which has always felt a bit lacking in the death-by-ling department. Upgrade your Ling to a Speedling as you progress through this typing challenge, wherein we're presented with some of a zergling's favorite words! Oh, and yes, it's actually a playable game.
W'rkncacnter!
MetaMetaCritic - Who Reviews the Reviewers?

In traditional tongue-in-cheek, completely unpredictable fashion (as with Magicka), Paradox decided that we need a new Metacritic. A Meta-Metacritic. With the intent of reviewing all the industry's best-known reviewers, we can finally see what, in the very least, Paradox thinks of us.
We can't repel humor of this magnitude! View all the ThinkGeek pranks here. As an added bonus, trying to buy one of the gag toys will result in a page that allows voting to make them real!
SWTOR - Live the Ship Droid Experience!

Complete with cinematic trailers and a full-length article, SWTOR now promises ship droids to bloat the egos of their owners on demand! There are several videos, so head on over there.
Google Chrome now brings gamers the ability to use two mice, making playing SC2 while playing BF3 infinitely easier.
Although Google's video shows the humorous side of their Google Maps addition to the NES family, Husky proves that it has full functionality.
Why settle for overhauling Skyrim when you can perform Dragonshouts in real life?! ThinkGeek brings us a new electronic hoodie, here's what they say:
And since we've maxed out our smithing skills, we've gone the extra step of enchanting this hoodie with our patented electronic apparel technology. That's right, in addition to looking like the Dragonborn you can shout like a Dovahkiin too! The attached speaker connects via a fabric channel to a powerful mini-amp. All 20 Dragon Shouts available to the Dragonborn are there at the touch of a button and without the need for any dragon souls. The hoodie is 100% cotton and features a face mask hood, complete with horns. What are you waiting for, Dragonborn? Let us test the power of your Thu'um!
As we tweeted earlier, Mars Effect is, quite possibly, Notch's attempt to get at least one developer to settle a lawsuit via a Quake shootout.

Here's a full list of features that totally aren't mocking anyone:
Zergotchi - The "Login Experience of your Life!"
Does anyone remember these toys? As with some of the ThinkGeek products, this is a toy worth having. Here's what Blizzard has to say:

That's all for this year! Let us know if you see any more that really deserve to go up here!
-Steve
The best one has to be the Mass Effect cartoon. I would totally watch that.
http://www.youtube.com/watch?v=qOqHUa2LfNY&hd=1