If hair metal bands, Pac-Man and shoulder pads send you into a fit of nostalgia, head for downtown Woodstock tonight. As part of its Friday Night Live series, ‘80s night will unfold from 6-9 p.m. Downtown merchants will stay open late offering specials, live music will play on the sidewalks and the Woodstock Visitors Center will host a game night.  Attendees are being encouraged to dress in ‘80s gear and enter a costume contest with a $100 downtown gift certificate at stake. More info: 770-924-0406.