She is best known for her work on the series Friends.

Later still he was well known for his work in education.

He is known for his work on international development and human rights.

He is known for his work in life history theory.

She is known for her work in film, television and stage.

She is well known for her work in television during the 1980s.

He is known for his work in the area of group theory.

He is known for his work on the television program Today.

She was also known for her work with cancer patients.

He is also known for his current work in trying to help make learning and teaching better.