Mark Klein knew early in his career that he had to apply business philosophies and a strong work ethic to his craft, which is why he has been a successful humorist and entertainer since 1979.

Mark Klein started doing comedy so that he could make extra money while he was pursuing an English degree at Colgate University. Soon after he graduated, he began touring the country, playing venues ranging from comedy clubs to large concert halls.

After more than 20 years of live appearances and network TV appearances, Mark Klein decided that it was time to bring his pro business message to those who would appreciate it most - business people. He now specializes in corporate humor speaking, performing for Fortune 500 companies such as Lucent Technologies and Brown-Forman, as well as smaller companies and business associations.

In addition to doing corporate entertainment, Mark Klein also serves as a banquet speaker, master of ceremonies and media spokesman.

• Forty Funny Minutes on Freedom - Corporate humor speaker Mark Klein uses a comedy headliner's approach to bring a serious message to business and civic audiences. The result is "Forty Funny Minutes on Freedom," a keynote that examines the responsibilities and choices unique to free societies. Klein includes a theme long abandoned by Hollywood: Profitable business is a force for good in the world, not evil. Message-driven, sharp and clean - a very funny man tackles very serious topics.