First off is my favorite army of the event, a very nice Genestealer Cult 'counts-as' Tyranids army. This army has some very cool concepts including the power lifter from Aliens as a Trygon.
Here is the "Cult Clown Car" Tervigon Limo:
The Patriarch and his giant Hybrids as Tyrant/Guard:
The Leman Russ as Tyrannofex:
Adeptus Mechanicus Grey Knights:
A nice very wolfy Space Wolves army by Stiff Neck Studios:
I don't what this is, but it looks awesome: