Here in the United States the Road Runner is used as the mascot for Time Warner Cable's high-speed internet service of the same name. Now in the UK, Virgin Media has just started using Speedy Gonzales in their new ad campaign for their super-fast broadband internet service. The first commercial is below and Virgin has posted an "interview" with Speedy here.
UPDATE: Two more Speedy commercials have surfaced for the Virgin Broadband UK campaign. One features Sylvester, the other features Slowpoke Rodriguez.