Downloaded the adafruit Occidentalis v0.2 Raspberry Pi distribution. Decided to use this as it has
sshd running by default.
Followed these instructions for creating the disk: http://elinux.org/RPi_Easy_SD_Card_Setup#Copying_an_image_to_the_SD_card_in_Mac.C2.A0OS.C2.A0X_.28command_line.29
Tried to use Disk Utility to do a "restore" but couldn't get it to work--which is why people don't do that, I guess. :)
Final result of copy:
2600000000 bytes transferred in 256.874493 secs (10121674 bytes/sec)