the highest my service offers is 50Mbps down and 5 Mbps up connection for $100. But since they can't keep a stabled basic internet service I would never get this.
Google has 1 GB per secoond Fibre Internet for Kansas City : http://arstechnica.com/tech-policy/news/2011/03/google-bestows-1gbps-fiber-network-on-kansas-city-kansas.ars
This is the fastest internet in the US or one of the fastest.