Misc: What brand name of playing cards is the most popular in America?

Questions

What city is also known as City, U.S.A.?

What country singer/songwriter (and sometimes actor) is known as 'the country outlaw'?

What entertainer is allowing one of his songs to be used in a government campaign to beat drunk driving?

What famous singer was known to give automobiles to complete strangers?

What group refused to have their pictures taken while they were not in their makeup?