Sam Farrow says he can only describe the first time he stepped in front of the microphone to emcee Pioneer Day more than 20 years ago with four words:"Nervous as the dickens."Not only was that his first time leading the ceremony but, Farrow said, some extra pressure was put on because Frank W. Mayborn, editor and publisher of the Temple Daily Telegram and sponsor of the annual salute to Central Texas pioneers, was present at the time.Farrow got over his nerves and has provided the colorful commentary for nearly every Pioneer Day since then. He accepts the invitation each year as an honor and says it gets easier each year. He said he has run into a few snags along the way. The most obvious, he said, is when there is dead time and he has to keep the show moving. Farrow said usually the show is planned well so it runs cleanly, but there have been a few times when it hasn't. By Angle Verdejo