What was the first live show you ever saw? It's OK to list two - the first one you went to with a chaperone like a parent or sibling, and the first you went to unchaperoned.
Mighty Mighty Bosstones with Dropkick Murphy's at Hara Arena. Probably circa 1997 or so. That or Squirrel Nut Zippers at The Fraze 1998.