Motorola Droid X
iMac
Most android phones are capable of presenting themselves as generic USB memory, for pushing of non-over-the-air updates, ringtones, music, etc.
Never used it myself, but a program called DoubleTwist is supposed to be pretty effective at helping you move your itunes collection onto the droid, and there's a Mac version.
Not sure if the development debugging tools are usable (adb), but those are mostly only needed if you are writing programs; and the development kit is based on Eclipse, which IS available for Macs. And again, I'd stress that this isn't relevant for at least 90% of the consumer market, and likely an even higher percent...
(continues)