Current Name: Gillette Stadium
Location: Foxboro, Massachusetts
Major Teams: Patriots (NFL), Revolution (MLS)
Cost of Naming Rights: $7.6 million/year
Construction Cost: $325 million
CMGI originally entered into a 15-year, $114 million deal in 2000 for the naming rights to the home of the New England Patriots, but the company dropped the big sponsorship contract before the team's first game in the newly-named stadium. Another victim of the dot-com bubble, CMGI saw its stock price fall from a level of $40 to pennies in less than two years and the expensive stadium sponsorship was one of the first things to go.
Gillette later acquired the naming rights, and has since been acquired by Procter & Gamble, however, since the household products company still uses the Gillette brand name, the stadium still sports the name.