For many, dropping $199 / $299 on an iPhone 3G (provided you actually locate one not hidden behind a 4+ hour line) is enough. For those who fell head over heels with the original iPhone dock, it's not. Here's your chance to send 29 more US bucks Cupertino's way, as the official iPhone 3G Dock is now on sale at Apple's website. Oh, and if you're really a sucker, you'll lay down 9 whole US dollars for a 3-pack of iPhone 3G Universal Dock Adapters to slip your new mobile into a Universal Dock.
Update: So apparently these have been in Apple stores since day 1. Considering just how long it'll take to get in one, though, this whole "online route" is still probably your best bet.
Read - Apple iPhone 3G Dock
Read - iPhone 3G Universal Dock Adapter 3-Pack