If you ever want to check your internet speed, you can use speedtest.net .  They report that they have generated over 2 billion speed tests and they do it internationally.

Here's what they report about the fastest countries and states:

"As of today, the Global Download Index is 7.68Mbps, and based on GDP, the top countries by download speed are:

South Korea (36.5Mbps)
Latvia (23.3Mbps)
Republic of Moldova (21.5Mbps)
Japan (20.3Mbps)
Sweden (19.8Mbps)

In the U.S., the top performing states are

Delaware (15.6Mbps)
Rhode Island (15.2Mbps)
Massachusetts (15Mbps)
New Jersey (14.1Mbps)
Virginia (13.6Mbps)"

The full report was generated as of May 2010 and can be read here.
 So where does Tennessee stand on this list?