Celebrate a quarter century of live music and late nights with Danny Plotnik as master of ceremonies and music from Whistler’s Mother, one of first bands to ever play the jam-friendly venue. Also on the bill: Craigslist Jerry (Dead covers). Also, there’s a group hug of the building at noon – because of course there is. First 100 people at the show receive a commemorative poster. 8 p.m. See Facebook page for information.