Mark Ritts (June 16, 1946 – December 7, 2009) was an American actor, puppeteer, television producer and director, and author. Ritts also produced and directed many independent videos and television spots as president of Mark Ritts Productions, Inc., for clients around the world.

Dec 10, 2009 · Mark Ritts, who played Lester the lab rat on the wacky children’s science series “Beakman’s World” and operated and voiced the puppet co-host Kino on the PBS children’s show “Storytime,” has...

Dec 12, 2009 · Mark Ritts, who scurried about in a threadbare 30-pound costume with a six-foot tail as the smart-alecky Lester the Rat in “Beakman’s World,” a wacky but insidiously educational 1990s television...

Mark Ritts was born on 16 June 1946 in West Chester, Pennsylvania, USA. He was an actor and director, known for Beakman's World (1992), Storytime (1992) and North Mission Road (2003). He was married to Teresa Parente and Nina Daniel.

Dec 15, 2009 · Writer, producer, director, actor and puppeteer Mark Ritts, known for playing Lester the Rat on childrens' science show "Beakman's World," died of cancer Dec. 7 in Los Angeles-area home....

Mark Ritts was born on 16 June 1946 in West Chester, Pennsylvania, USA. He was an actor and director, known for Beakman's World (1992), Storytime (1992) and North Mission Road (2003). He was married to Teresa Parente and Nina Daniel.

Mark Ritts, American production company executive. Recipient 3 Silver medals, 1 Gold medal New York Film and television Festival, 1979-1982, Jury award, 1984-1985, Case Gold medal, 1986. Member of Harvard. Ritts was born in West Chester, Pennsylvania.

Mark Ritts, who played Lester the lab rat on the children's science series "Beakman's World" and also operated and voiced the puppet co-host Kino on the PBS children's show "Storytime," died of cancer Monday at his home in La Cañada Flintridge, Calif., said his wife, Teresa Parente.

Mark Ritts (born June 16, 1946 in West Chester, Pennsylvania, died December 7, 2009) was an American actor, television producer, and director prominently known for portraying the role of Lester the Lab Rat in the children's educational television series, The Best of Beakman's World.

Writer, producer, director, actor and puppeteer Mark Ritts, known for playing Lester the Rat on childrens’ science show “Beakman’s World,” died of cancer Dec. 7 in Los Angeles-area home. He was 63.