forgotten_aria

Many apps are offline, but I believe that setting up the phone (and certainly synchronizing it) require data access. (You may be able to do these solely over Wifi at home, though.) Additionally, most carriers don't allow you to "sideload" apps from your computer -- they require you download them over the air. Finally, I don't think any of the carriers will sell you an Android phone without requiring data access.

If you're on a GSM network you could buy an unlocked phone and only use data on Wifi and make things work, but it probably wouldn't be an ideal experience.