Well, that was something. The second presidential debate Sunday between Republican nominee Donald Trump and Democratic nominee Hillary Clinton was pure fireworks.

Trump, who has often been brash during his attempt to win the White House, was especially direct in his critiques of his opponent and the moderators, CNN's Anderson Cooper and ABC News' Martha Raddatz. At one point, claiming the debate was unfair to him, Trump said the event was "one on three." 

Trump, as promised, brought up Bill Clinton and allegations from women who said they were sexually harassed by the former president. "Bill Clinton is far worse, mine are words, his was action," Trump said, alluding to a recent video that showed him making jokes about sexual assaulting women in 2005.

Here are some of the other most talked about moments from the debate:

Spouses of the candidates, Bill Clinton and Melania Trump, both of whom have been pulled into campaign scandals, shook hands before the debate.

In a sign of the recent tone of the election, the nominees avoided shaking hands.

Clinton laid out her vision for the country in her opening statement.

Trump talked about a recent tape in which he talked about about touching women's genitalia without consent.

Clinton responded to the Trump video, saying it was one of many troubling statements Trump has made. 

Trump brought up Bill Clinton's past and the Democratic nominee responded by saying she'll take the high road. 

Trump claimed that if he becomes president, he'll get his attorney general to "look into" Hillary Clinton.

Trump, addressing a question from a Muslim voter on Islamophobia, said he would fight terrorism.

Clinton defended her private speeches to Wall Street, which were made public Friday by WikiLeaks.

Trump talked about undocumented immigrants, calling some "murderers and very bad people."

Clinton claimed Russia is pushing for Trump to win the election.

Trump disagreed with his running mate, Indiana Gov. Mike Pence, on his stance on Syria.

Trump said he doesn't know anything about Russia's inner workings.

At the end of the debate, responding to a voter question, the candidates talked about one thing they admired about their opponent. Clinton referenced Trump's children, while Trump talked about Clinton not giving up.

Heading into the debate Sunday, the Republican ticket was in disarray, having it's worst week in a campaign that's largely been defined by controversy. A tape from 2005 revealed an extremely lewd conversation between Trump and TV host Billy Bush. Trump told Bush about his failed attempts to have sex with a married woman and then described what seemed like sexual assault. 

"You know I’m automatically attracted to beautiful — I just start kissing them. It’s like a magnet. Just kiss. I don’t even wait," he said to Bush. "And when you’re a star, they let you do it. You can do anything. ... Grab them by the p---y. You can do anything."

The comments appeared to be the final straw for many GOP leaders, some of whom were slow to climb aboard the Trump Train in the first place. A long list of party leaders pulled their support from Trump over the weekend. But amid calls from Republicans for Trump to step aside, the GOP nominee said he would not drop out.

Heading into the second debate, Clinton led Trump in the polls by a somewhat narrow margin. The Democratic nominee was up by 4.6 percentage points, according to the Real Clear Politics average of polls. The polls-only forecast from data-driven website FiveThirtyEight gave Clinton an about 81 percent chance of winning the election.