Better known by his stage name Earthquake, Nathaniel Martin Stroman has worked as an actor, voice artist and comedian since the 1980s. His jokes tend to steer clear of current events as he talks generally about the trials and tribulations of being in relationships. "I've been investing in women for 40 years and have yet to see a profit," he jokes in one routine. He performs tonight at 7:30 and 10 at the Improv, where he has shows scheduled through Sunday. Consult the Improv website for ticket prices.