'Lip Sync Battle' Season 2: Kaley Cuoco channels Britney, Josh Gad makes out with Johnny Galecki [VIDEO]

Season 2 of “Lip Sync Battle” on Spike delivered another set of show-stopping performances from some of today's hottest celebrities.

On Thursday, “Big Bang Theory” star Kaley Cuoco was pitted against Josh Gad, popularly known as the voice of Olaf in Disney’s “Frozen.” Both pulled out all the stops to entertain the audience and win in the competition. [Watch below]

Cuoco proudly flaunted her washboard abs while donned in a Calvin Klein sports bra and distressed denim shorts. She floored everyone when she spitted some Mystikal verse as she mouthed to the song “Move B----“ by Ludacris. The 30-year old blonde actress also shed off her sweet Penny character as she busted some sexy moves throughout her performance, even twerking while taunting her contender.

Not to be outdone, Gad had his own surprise up his sleeve. The 34-year old Broadway star put on a big silver bow on his head while he performed Whitney Houston’s “How Will I Know.” He captured the audience’s hearts with his adorable number, similar to how Olaf became a beloved character.

For his second performance, Gad returned to the stage dressed as Donald Trump, as he mouthed Divinyls’ hit, “I Touch Myself.” As if that’s not weird enough, he stripped down to his boxers covered in money and went to swing on the wrecking ball prop, similar to what Anne Hathaway did in her number last year. In what could be the most shocking number on “Lip Sync Battle,” Cuoco’s co-star and ex-boyfriend Johnny Galecki, wearing a similar ensemble, appeared and made out with Gad.

Determined to leave her competitor in the dust, Cuoco then channeled her inner pop star and performed Britney Spears’ hit “I’m a Slave 4 U.” She heated up the stage as she gave off the sultry songstress vibe, complete with the jungle ambience and an albino python.

Moments later, "Lip Sync Battle" host LL Cool J revealed Gad as the winner and gave him the championship belt. Gad put on the belt, but in yet another surprise, took it off and gave it to Cuoco.

Those who watched the show took to Twitter to rave about what they called the most hilarious and entertaining episode of the show so far.

Source: YouTube/Lip Sync Battle

"Lip Sync Battle" airs in the US every Thursday at 10/9c on Spike.