Typical advice from Tom and Ray's Car Talk: "Car won't go in reverse? Buy a house with a circular driveway." A.k.a. The Tappet Brothers or Click and Clack (like the sounds from a car in disrepair), Tom and Ray have "faces perfect for radio" and Boston accents as thick as chowder. Their show, one of National Public Radio's most popular, lets listeners (2.3 million of them) call in with their car woes while they dish out their wit and know-how. At the end of each hour, 2 of 2 things are guaranteed to happen: you'll learn something about your motor vehicle and you'll have a belly laugh - now that's Formula One radio.