Nintendo Wii

North America:
1. Super Paper Mario (Nintendo)
2. Wii Play (Nintendo)
3. The Legend of Zelda: Twilight Princess (Nintendo)
4. Tiger Woods PGA Tour 07 (EA Sports)
5. Super Monkey Ball: Banana Blitz (Sega)

Japan:
1. Wii Sports (Nintendo)
2. Hajimete no Wii (Nintendo)
3. Mezase!! Tsuri Master (Hudson)
4. Zelda no Densetsu: Twilight Princess (Nintendo)
5. Fire Emblem: Akatsuki no Megami (Nintendo)

UK:
1. The Legend of Zelda: Twilight Princess (Nintendo)
2. Tiger Woods PGA Tour 07 (EA Sports)
3. WarioWare: Smooth Moves (Nintendo)
4. Excite Truck (Nintendo)
5. Red Steel (Ubisoft)

Nintendo DS

North America:
1. Puzzle Quest: Challenge of the Warlords (D3 Publisher)
2. Brain Age (Nintendo)
3. New Super Mario Bros. (Nintendo)
4. Mario Kart DS (Nintendo)
5. Cake Mania (Majesco)

Japan:
1. Gyakuten Saiban 4 (Capcom)
2. TOEIC Test DS Training (IE Institute)
3. Eigo ga Nigate na Otona no DS Training: Motto Eigo Duke (Nintendo)
4. Mario vs. Donkey Kong 2: MiniMini Daikoushin! (Nintendo)
5. Layton Kyouju no Fushigi na Machi (Level 5)

UK:
1. Dr. Kawashima’s Brain Training (Nintendo)
2. Pokemon Ranger (Nintendo)
3. Cooking Mama (505 GameStreet)
4. Mario Kart DS (Nintendo)
5. 42 All-Time Classics (Nintendo)

Some may give you only the big one, but we give you the BIG five

Source: Gamasutra