Anyone who still needs convincing that improv can produce an independent piece of capital-A Art would do well to see The Improvised Shakespeare Company. This cast of visiting Chicagoans produces entire plays utilizing the standard tropes and antiquated language of Shakespeare. As a team, it’s a complete package: Some are great at verse and don’t mind being pimped into producing it; some are adept at miraculously finding connections between storylines that have wandered too far afield; and some, like new New Yorker Thomas Middleditch, are just inherently watchable whether they’re playing maidens or cows. The company can go profound and poetic, or it can roll in the muck with the groundlings, so neither laughter nor amazement is short in supply.