The Joe Rogan Experience is one of the biggest podcasts in the world, and he recently had Donald Trump on in a major U-turn.

Donald Trump's second presidential inauguration has a heavy combat sports presence. Notables from the UFC, boxing and WWE have flocked to Washington ahead of Trump's inauguration Monday, which officially marks the beginning of his second term as U.

Barron Trump, the youngest son of President Donald Trump, shines as a charismatic media darling, and was pivotal in his father's political comeback.

On a nearly three-hour episode of Joe Rogan's podcast, Zuckerberg signaled optimism about what a Trump presidency means for tech businesses.

Kamala’s chairs,” Von joked, a crack at former Vice President Kamala Harris, as he sat down in a different chair between the Paul brothers.

Popular comedian Theo Von attended an exclusive viewing of President Trump's inauguration this week in Washington, D.C., and called the experience "inspiring."

Former NHL player Wayne Gretzky was in attendance with his wife, Janet Jones. Trump has teased the former Edmonton Oilers, Los Angeles Kings and New York Rangers star. On Christmas Day, Trump urged Gretzky to become the next prime minister of Canada.

Country singer Carrie Underwood will be in attendance and is set to perform “America the Beautiful” at Trump’s inauguration before he takes the oath of office, singer-songwriter Lee Greenwood sang his song “God Bless the U.S.A.,” and Chirstopher Macchio sang “Oh, America!”

Joe Rogan reigns the podcast world with The Joe Rogan Experience, racking up 19 million listeners and over 5 billion views since starting the polarizing pod in 2009. Rogan's reach is as expansive as his career, which has included long-running stints as the host of Fear Factor and popular UFC commentator.

Jessica Ditzel was spotted alongside Joe Rogan at Trump’s inauguration, a rare public sighting of the couple. Fans were surprised to see Ditzel, as she usually keeps her personal life private.

See images of the celebrities and prominent business leaders attending the inauguraton of President Donald Trump in Washington, D.C., on Monday.