Happy 50th birthday to Mountain Goats frontman John Darnielle who was born on 3/16/67. The quirky songwriter has developed a devoted following over the course of 16 albums with the newest Goths, due May 19th. Twenty-five years into an acclaimed musical career, Darnielle remains an acute chronicler of broken souls. But as an artist, he digs deeper, offering a necessary voice of empathy, but also occasional winking snippets of humor. Watch the Mountain Goats perform this full concert from 2/25/09 in San Francisco…