"Maybe the dogs have to become a little stronger," says Howard, who advises Todd to make the jokes more topical. "Who's a dog's number one enemy? Mitt Romney, he tied a dog to the roof of a car!"
Up next is American BMX Stunt Team. They almost didn't make it to New York because of a mistake in Las Vegas.
"I know how dangerous this stage is, believe me. What you guys have done in this confined space, I bow down to you," says Sharon.
Howie is also a fan of the smaller-scale stage act because it makes the whole act more dangerous. "You deserve to go on," he says.
Nikki Jensen from Australia, the only solo female singer left in the competition, is next, singing "The Scientist" by Coldplay. As with Edon's performance, the music is too loud, so it's difficult for home audiences to hear Nikki's voice. What I can hear, however, sounds pretty good. Nikki herself looks dull and boring on stage.
"I think you did a nice job, [but] I don't think you did anything to be memorable," Howard says.
Next, The Scott Brothers perform again. I really liked these guys in their previous auditions, and tonight they are even better. The audience agrees with me -- they cheer throughout the entire act and give the brothers a standing ovation at the end.
"There are people in this contest that are quicker than you, more athletic than you, but you are original," Sharon says. "I sincerely hope you're in the four that go through."
Michael Nejad surprised everyone during his first audition when he played a broom and dustpan as instruments. In an interview before Michael's performance tonight, Howard says he thinks we have a better chance of seeing Jesus Christ than seeing Michael win the competition. Ouch.
Howard was right to predict that, however. The crowd boos Michael almost as soon as he begins to play a baseball bat like a clarinet and all three judges buzz him out by the end of the performance.
"If you play a baseball bat as an instrument, it's still gotta sound like a good instrument," Howard says. "It was annoying and horrible."
787 Crew from Puerto Rico takes the stage next. They made a big mistake in Las Vegas and Sharon says, "We give second chances. But not a third."
During their performance, it's clear they are good dancers, but they're not entirely in sync. I've definitely seen better.
"You didn't step it up," says Howie when they finish.
"I think you're in trouble tonight, boys," Howard says. "You do a lot of similar things each time I see you."
I've been looking forward to the next act: Shanice and Maurice Hayes, street performers. Before they sing, the judges have a little argument amongst themselves about whether or not the father, Maurice, brings down the act.
Tonight they sing 'There You'll Be' by Faith Hill to a standing ovation.
"I was skeptical of you, sir," Howie says to Maurice. "Tonight, no, you did not hold [Shanice] back. I think I agree with Sharon, I think you're gonna go far."
The last act of the night is art painters/dancers David Garibaldi and his CMYKs. I thought I liked these guys before. Tonight I LOVE them. The dancing is more exciting and the reveal is amazing.
David paints and dances at the same time; during the performance his painting doesn't really make sense, but then at the end, he spins it around and we see it's a face. The performance gets the audience and all three judges on their feet.
"If I was a woman, I would marry you, sir," Howard says to David.
'America's Got Talent' recap, Quarterfinals begin in New York
Shanice and Maurice Hayes perform on "America's Got Talent." (NBC)