I have pondered a very similar question myself. I do believe in France it is infact called the Oui.
Proud Wii-S3 owner
PS3: Guitar Hero III, Heavenly Sword, Lair, Oblivion, Resistance:Fall of Man, Motorstorm, Skate
Wii: Call of Duty 3, Excite Truck, Mario Party 8, Red Steel, Sonic & the Secret Rings
SSX Blur, Super Mario Galaxy, Super Paper Mario, WiiPlay, WiiSports, Zelda: Twilight Princess
PS2: FF-X and FF-XII, Gran Turismo 4, Gretzky NHL '06, Guitar Hero II, Jak & Daxter, Ratchet & Clank, Shadow of the Colossus, and Sly Cooper
DS: NEW Super Mario Bros. and Pokemon Diamond