IO West, formerly ImprovOlympic West, is the Los Angeles arm of Chicago's legendary ImprovOlympic Theatre.  Created by improv guru Del Close and Charna Halpern, it is now celebrating it's 25th anniversary.  The I O West is located at 6366 Hollywood / Hollywood, CA--2 blocks West of Vine.  A bar and theatre, it is 21 and up.  It has improv & sketch shows 7 nights a week. 

New classes are always starting in the art of improv & sketch.