Most impressive single solve (includes multi-bld solves)
Mats 5.55 WR (because it was the first 3x3x3 WR break that happened during my cubing time)
Hard choice because I am always impressed by Maskow's multi, too.
Most impressive average
Feliks 6.54 WR
Best overall cuber
Feliks Zemdegs (because everyone thought his time was over

)
Best cuber in each event
4x4 - Sebastian Weyer
6x6 - Kevin Hays
BLD - Noah Arthurs
Best Competition
WC2013 (although i only watched the livestream)
Best walkthrough
Cubing World 12 Cubers