According to research 98% of right handers have language centers in the left (considered the norm). 2% of right handers have the language centers on the right.
66% of left handers have the language centers on the left and 34% of left handers have the language center on the right (i.e only 1/3 of the left handers actually have their language centers on the opposite side of right handed people).
I had posted above before.
Actually came across some interesting data that implies it doesn't matter which ear hears it, it's still processed by the side of the brain that handles the task. It stands to reason when I think about it. Many people are deaf in one ear. They'd be acting odd if the rule was that only logical is accepted by the right ear and you happen to be deaf in that ear... 
Alex
