With Android Froyo (OS 2.2), how can I do USB tethering with a Mac OS X?
EasyTether Lite works for me. I've used it on an XP machine as well as a Mac. I love that it's cross-platform.
Shares your phone Internet connection with computer/laptop/notebook (Windows 7/Vista/XP 64-bit/32-bit, Mac OS X 10.4/10.5/10.6, Ubuntu 10.4+). EasyTether works via USB.
Does not need root access.
There's also EasyTether Full.
Full app allows https - access to secure sites such as facebook, gmail, online banking etc.
Full app allows you to tether ps3, xbox 360, wii via your PC - enable Internet Connection Sharing on your computer for that.