James Randi, a famous skeptic, once offered a prize of $ 1 million for anyone who could prove the existence of scientific paranormal capabilities.
Carl Sagan, a famous astronomer who is also a skeptic, once wrote a popular book about life in space entitled Cosmos.
Michael Shermer, a famous writer and speaker in the skeptical community, was once a priest before finally becoming skeptical.
Penn & Teller, a famous magician duo who is also skeptical, has television shows that solve myths and dismantle magician tricks.
Richard Dawkins, a famous biologist who is also skeptical, once wrote a best-seller book about evolution entitled The Selfish Gene.
Susan Gerbic, a famous skeptic, led the Guerrilla Skeptticism on Wikipedia project which aims to delete wrong or inaccurate information from the Wikipedia page.
Neil Degrasse Tyson, a famous astrophysicist who is also skeptical, was once a narrator in the television show Cosmos: A Spacetime Odyssey.
The Minchin team, a famous musician and comedian who is also skeptical, often mocking pseudoscience and trust that is not supported by evidence.
Julia Sweeney, a famous actress and writer who is also skeptical, wrote and starred in a single show titled Letting Go Of God who tells her personal journey from religion to skepticism.
Steven Novella, a famous neurologist who is also skeptical, leads a popular podcast that discusses controversial skeptic and scientific topics.