2011 looks to be a solid year for Pokemon right from the get go. We have not one but two give aways.
The First is Ash's Pikachu
Compatible with: HeartGold, SoulSilver, Diamond, Pearl, Platinum
You can get it at Toys R Us from January 30th to February 7th
This Pikachu might not unlock anything special, but it does have a moderately unique moveset. It is Naughty Natured.
It is Level 50
Moves:
Volt Tackle
Iron Tail
Quick Attack
Thunderbolt
The second are the Shiny Legendary Dogs, Suicine, Entei and Raikou. This will be given away at separate times from your local Game Stop. As this is a staggered give away, it is important read all of this carefully to know when to get which Pokemon. Each will only be available for a short time so be on point with this!
Raikou - January 3rd - 9th
Rash Nature
Level 30: holding Micle Berry
Zap Cannon
Aura Sphere
Extreme Speed
Weather Ball
Entei - January 17th - 23rd
Adamant Nature
Level 30: holding Custap Berry
Flare Blitz
Howl
Extreme Speed
Crush Claw
Suicine - January 31st to February 7th
Relaxed Nature
Level 30: holding Rowap Berry
Sheer Cold
Air Slash
Extreme Speed
Aqua Ring
It is a good time to have Pokemon. It is unknown right now if Nintendo will release these Pokemon over the Wifi. It is very rare for them to do so though. Don't hold your breath and go for what you are interested in!