lolz tau, necrons, and eldar (and tyranid) were the armies i liked the most. I'm going to go take pictures and paint some more to show ya, but in the meantime, check this out:
two part battle:
http://www.youtube.com/watch?v=1RU1H6yJ8uo...feature=related
http://www.youtube.com/watch?v=1xS_PNTLGJ8...feature=related