Our only complaint with Airport has been that, while the signal passed through plasterboard and brick--letting us stay online even while enjoying fresh air in a courtyard a floor below and 100 feet from the base station--we had an intermittent connection from the room opening out into that courtyard.
In a few years, it's likely we'll see an all-out battle between the likes of Virgin, Sky, Microsoft, Sony and even the BBC, Apple or Google to own your home's de facto entertainment hub - providing movies, music, television and games via a web connection in your living room.