On this week’s Best of Downtown, entertainer John Davidson discusses his recent Concert Window show, his upcoming appearance in Gardiner, and his Maine roots. We also talk with author Nicholas Parisi about his book, “Rod Serling: His Life, Work, and Imagination”, and Burleigh Drummond of Ambrosia looks back at the band’s early days, tells us how they came to meet Kurt Vonnegut, and explains their diverse influences.