If you have any Backflip or iPhone-toting friends like we do, you'd know that AT&T isn't exactly the model for network reliability. There's drop calls, weak signals, full signal but slow data, etc. Most people just suffer through AT&T's problems but hey, you don't have to any more--the AT&T 3G MicroCell will solve all your problems.
Basically, the AT&T 3G MicroCell acts as a mini cell tower in your home, giving you full signal for both data and voice connections. You just plug your home internet connection into the MicroCell and voila, you'll get awesome coverage in your home. The MicroCell costs $150 which is kind of okay but kind of not. It's decently priced because it's a one time fee, no need to pay a monthly fee (unless you spring for the $20/month for unlimited calling) but kind of ridiculous because AT&T is using your internet connection to solve their problem.
Either way, if you have terrible AT&T 3G service at home or office, the AT&T 3G MicroCell is your answer. Pony up $150 and you'll get to enjoy voice and data coverage like you should.