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There have been some mighty horrible renditions of Led Zeppelin's Stairway To Heaven, but when Nancy and Ann Wilson of Heart performed the song in front of the three remaining members of the legendary British rock band at the Kennedy Center Honors ceremony on Dec. 2, it made Robert Plant cry tears of joy.

See how the world searched with Google's 2012 Zeitgeist

Australian comedy group 'Axis Of Awesome' perform a sketch from the 2009 Melbourne International Comedy Festival. Footage courtesy of Network Ten Australia.

The suits, numbers and colors in a deck of cards correspond to the seasons, moon cycles and calendar. Marco Tempest straps on augmented reality goggles and does a card trick like you've never seen before, weaving a lyrical tale as he deals. (This version fixes a glitch in the original performance, but is otherwise exactly as seen live by the TEDGlobal audience, including the dazzling augmented reality effects.)