Calgoo wasn’t cutting it. Failed once, and didn’t have a mechanism to kickstart it. I’ve been hearing about BusySync’s Google Calendar-syncing goodness for a while, and the reports are borne out: BusySync has low impact on my MacBook’s resources. It’s fast. And it makes nice two-way roads between iCal and Gcal.
I know it does other stuff, but I don’t care about those things right now.
Now, please, Apple: CalDAV on iPhone. Seriously.