Found some good Lego Ninjago animation on Youtube. There are four episodes posted by TWLUG.

Ep.1
http://www.youtube.com/watch?v=R7gfU..._order&list=UL

Ep.2
http://www.youtube.com/watch?v=X2Af_...eature=related

Ep.3
http://www.youtube.com/watch?v=VABqE..._order&list=UL

Ep.4
http://www.youtube.com/watch?v=c2YRf...eature=related

Most if not all 2011 Ninjago Lego sets are featured in these episodes.

Enjoy and be a master of Spinjitzu !