I work with both the G1 and iPhone at my job and carry both around with me, and the browser on Android just kills the whole deal.
I don't know if it's the lower DPI screen on the G1, the lack of multitouch, or just the rendering speed. I know they're both Webkit under the hood, but man Apple spent a lot more time optimizing Safari and it shows.
The new Android SDK supports variable DPI, so maybe that's a hint that newer phones with iPhone-like screens are on the way.