Femtocells are small, low-cost cellular base stations optimised for use in the home and small businesses. This paper discusses this exciting new market and concludes that femtocell and Wi- Fi technology will be co-existing, rather than competing, to deliver a comprehensive digital home experience. It describes how femtocells will enhance the delivery of telecommunications services in the home and the new possibilities arising from the integration of femtocells with home gateways and set-tops. It will also point out technical challenges cable operators must assess and outline the opportunities for cable operators complementing cable access infrastructure with femtocells to enhance market share and customer retention through enhanced triple play and quad play services.