Your getting almost 6 to one on your money here - almost a must call for me - you can't get reraised. Chances are the BB has no 6 since he's calling an all in after you called it. AK and AQ would most likely reraise here (as would 10 10 - AA). Only a few hands to worry about like AJ - KQ - QJ - low pp. He probably has Ax - with the pot odds your getting you can't let it go. - nice call.
BTW what did he have? - what did All-in have? - you won right?
mike