Comcast announced to offer residential 50Mbps internet service in many parts of the Silicon Valley.
With wideband, Comcast will offer the fastest speeds available today in the Bay Area, including the Extreme 50 tier with download speeds of up to 50 Mbps. Wideband will also enable Comcast to double speeds for the majority of existing high-speed Internet customers at no additional cost.

The new Comcast Extreme 50, offering up to 50 Mbps of downstream speed and up to 10 Mbps of upstream speed sells for $139.95/month. The Comcast Ultra, offering up to 22 Mbps of downstream speed and up to 5 Mbps of upstream speed has a monthly cost of $62.95.
With Extreme 50, Comcast customers will be able to download a high-definition movie (6 GB) in about 16 minutes, a standard-definition movie (2 GB) in about five minutes and a standard-definition TV show (300 MB) in a matter of seconds. Customers with Extreme 50 also will be able to download digital photos, songs and games faster than ever.

To find out if you can surf as fast as Koreans have been for years you can check availability on the Comcast site.