Who is the old man in the Six Flags commercials?

He is Mr. Six, Mr. Six is a 76 year old, advertising character, first featured in a 2004-2005 advertising campaign by the theme park chain Six Flags. Appearing as a bald, wrinkled old man wearing a tuxedo and thick-framed glasses, he invites stressed and over-worked people to Six Flags by pulling up in a retro-style bus and performing a frenetic dance to the Vengaboys song "We Like to Party"