From ArborWiki

At Toastmasters, members learn by speaking to groups and working with others in a supportive environment. A typical Toastmasters club is made up of 20 to 30 people who meet once a week for about an hour.

Three chapters in Ann Arbor:

• Monday
• Wednesday at Veterans Hospital (lunch) and Concordia University (evening)
• Thursday

National organization: http://www.toastmasters.org/