Apple sells a range of different WiFi routers, known as AirPort base stations. There are three available: AirPort Extreme, AirPort Express and AirPort Time Capsule. This review looks at all three Apple WiFi routers, and helps you decide which one to buy.
Apple - Time Capsule - wirelessly backup/store up to 3TeraBytes, faster WiFi base port than trad. routers, even allows access to additional external hard drives (basically could have entire iTunes/iPhoto library on separate hard drive & access it from any Apple you want, anytime, wirelessly). So cool, technology done right; want!