It's arguably the biggest video gaming event of the year. The Electronic Entertainment Expo, E3, started in 1995 as an annual showcase for the gaming world. Hundreds of companies, from multi-billion dollar corporations like Nintendo, Sony, and Microsoft, to little-known software developers use E3 hoping it will launch them towards digital success.  This year's E3 just finished up in Los Angeles and CNN has your front-row seat. Here are some highlights you've just Gotta Watch.

From Wii to U – At the world's biggest showcase for video games, Nintendo made the biggest splash this week with the unveiling of Wii U, the next generation of its popular, motion-controlled gaming system.

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