Jimmy Fallon

Jimmy Fallon gets serious about racism

Instead Fallon, at times appearing to fight back tears, spoke from the heart about Saturday's deadly events in Charlottesville, Virginia.

While acknowledging that "The Tonight Show" is not political, Fallon opened up about the clashes in Charlottesville between white nationalists and counterprotesters.

He said it was his "responsibility to stand up against intolerance and extremism."

Trump lets Jimmy Fallon mess up his hair

And on Thursday, Jimmy Fallon asked if he could mess it up.

First, Trump winced and grimaced, shaking his head as the "Tonight Show" audience erupted in a smattering of applause and cheers.

Moments later, the Republican nominee relented.

"The answer is yes, but the people in New Hampshire, where I'm going to be in about an hour from now, I hope they're going to understand," Trump said. "Go ahead."

Trump's signature coif has long been the subject of intense scrutiny, including from those who've questioned whether Trump's do is the real thing.

2015 Emmy Awards: 5 things to know about the big show

While Taylor Swift and Jimmy Fallon can already call themselves winners this year, many are gearing up for a close race in Best Actress in a Comedy Series, Best Drama and other important categories.

As we eagerly wait for impressive fashion, shocking upsets and plenty of unforgettable moments, take a look at five things you need to know about tonight's star-studded show.