While he'll always be known for being the lead singer of Black Flag, one of the most hardcore punk bands of the '80s, Henry Rollins has emerged in middle age as a full-fledged Renaissance artist, having spent the past two decades writing books, poetry and his own magazine column. Then there was the acting, acting as host on television and radio and campaigning for human rights. Rollins' most important and successful artistic contributions however, come from his unique spoken-word tours, delivering an engaging wit and commentary on contemporary topics. More than just a series of unfocused rants on things that get him peeved, Rollins' approach to his unique classroom rhetoric is at once self-deprecating, funny and genuine in its observations. Unapologetic, Rollins performs at the National on Sunday, March 7, at 7 p.m., $20.