Interview by Christine Thompson Critics are fond of labeling Scott Mickelson's music as "Folk" or "Americana," and even "Punk/Americana," but it makes him bristle.  It started when critically acclaimed “Airstream”  brought FAT OPIE early successes including their song "Bullets In My Briefcase," winning a national band search sponsored by MTV(Sonicnet)/7-Up.   Try as we might,