Thread #dunno: Christmas Edition

Chat room: http://goo.my/cpgroom - have a simple question? Ask here.
/cpg/ FAQ: http://goo.my/cpgfaq - read this before asking silly questions.

Introduction to Competitive Pokemon: http://goo.my/cpgintro - Autism ahead. Proceed at your own risk.
Tiers Explained: http://goo.my/tiers
Clauses and Banlists: http://goo.my/banlist
StrategyDex & Movelists: http://goo.my/strategydex


Online Pokemon Simulators:

Pokemon Showdown: http://goo.my/pju
Pokemon Online: http://goo.my/7xh

Official Website: http://goo.my/pkmn


Other Informative Websites:

Serebii: http://goo.my/serebii
Bulbapedia: http://goo.my/bulbapedia
Veekun: http://goo.my/veekun

ToTT: Assault Vest is a pretty good item. Which pokes, in your opinion, are the best or most interesting users?