Fairly good experience at a recently opened ATT retail store in Huntington Beach, CA.
5:20a arrival. Number 13 in line. Over 100 at store opening.
Employees took info before opening for smooth transaction. Even offered bottled water. 10 customers taken at a time. Told store had about 100 3G's.
Longer in store experience for me. As a "Blue" legacy ATT customer, I needed to migrate.

Out by 8:30a, with NO activation due to server problems. Told to go home and sync with iTunes. No luck 2 hours later.
Set for a IPhone 3G seminar in the Apple store tomorrow.