Why doesn't anything happen when I connect my Nexus S to a MacBook Pro 2010 using a USB cable? I've tried to connect a Nexus S to a MBP 2010 via USB. After connection, the Mac does not respond.

Anybody know why? I have tried it with a powered USB hub and get the same result: No responses for the USB storage.
Fire up system profiler on your mac. This can be refreshed to show all USB devices connected - even if there is a driver issue, at least you'll know if the cable and physical connection are good.