The warmth and tenderness of this Texan sent his songs soaring up the country charts in the '70s and '80s. Here are 25 of his biggest hits: his #1s I Believe in You; Lord, I Hope This Day Is Good; You're My Best Friend; Some Broken Hearts Never Mend; Til the Rivers All Run Dry; Say It Again; I'm Just a Country Boy; Love Is on a Roll , and more!