Follow these links to various Improv theaters and other fun and useful sites:
Improv Theaters in Manhattan
Toastmasters International - Toastmasters is a non-profit organization dedicated to helping people improve their speaking skills, with more than 10,000 clubs and 200,000 members throughout the world.
Greater Stamford Toastmasters - One of the largest and most competitive Toastmasters clubs in the world, Greater Stamford Toastmasters served as a training ground for several members of World Class Indifference.
Connecticut Improv Comedy Groups
Other Improv Comedy Groups
Sheer Idiocy - This improv group was founded and initially directed by Dana Rossi. The website includes a bunch of great improv games and exercises.
Mission: Improvable - This group does weekly Saturday improv shows. Dana Rossi was a cast member from 1993 to 1997 and was the director in the Fall of 1994.