Teller generally does not speak while performing, and instead communicates through mime and nonverbals, though his voice can occasionally be heard during their live shows and television appearances.

Besides magic, the pair has become associated with the advocacy of scientific skepticism and libertarianism, particularly through their television show Penn & Teller: Bullshit!

Penn and Teller were introduced to each other by Wier Chrisemer,[3] and they performed their first show together at the Minnesota Renaissance Festival on August 19, 1975.

[5] Chrisemer helped to develop some bits that continued, most notably Teller's "Shadows" trick, which involves a single red rose.

Penn and Teller made an appearance on Bill Nye the Science Guy season 2, episode 7 - "Light Optics".

It has featured critical segments on gun control, astrology, Feng Shui, environmental issues, PETA, weight loss, the Americans with Disabilities Act, and the war on drugs.

[11] Penn Jillette hosted a weekday one-hour talk show on Infinity Broadcasting's Free FM radio network from January 3, 2006, to March 2, 2007, with cohost Michael Goudeau.

They were eliminated on the week of April 6 where it was shown that Teller used a puppet of a rabbit in a hat to "operate" the central head of "Hydra".

Nicole Byer, who was the guest panelist of the night, successfully guessed the duo to be underneath the "Hydra" masks.

In an NPR interview, Teller said their disagreements often lead to better artistic decisions because they bring out new ideas and expand the range of discussion.

[20] On April 5, 2013, Penn & Teller were honored with the 2,494th star on the Hollywood Walk of Fame for their achievement in the category of Live Performance.

[27][28] For their contributions to the West End production Magic Goes Wrong with Mischief Theatre, they were nominated for a 2020 Olivier Award.

They normally end the trick by restoring the unscathed flag to its starting place on the flagpole; however, on a TV guest appearance on The West Wing, this final part was omitted.

The duo had hoped to put the trick in their mini-tour in London; however, it was first shown to the public in their Las Vegas show on August 18, 2010.

[36] In various episodes of their show, they have heavily criticized both the Internal Revenue Service and the Environmental Protection Agency, as well as taken stances against circumcision and gun control, and in support of ideas such as freedom to eat fast food, private property, and lower taxes.

[54] Both in-game and in interviews Penn states that Desert Bus was a reaction to the controversy of violent video-games going on at the time.

[54] The game has since been used in an annual charity event called "Desert Bus for Hope" run by the Canadian internet comedy troupe LoadingReadyRun.