Harlem Shake, Gerard Butler and 'Pretty Little Liars' Cast Bust Moves in Viral Dance VIDEOS [WATCH]: Actor Gets Down with British Troops, Young Stars go PLL Style

Some fans STILL can't get enough of the Harlem Shake fever, including several celebs! Hollywood heartthrob Gerard Butler recently busted a move to Bauuer's revamped viral YouTube hit with some British troops in the Wellington Barracks, while members of the "Pretty Little Liars" cast spiced things up by breaking it down in the boardroom! Check out the dance videos below!

The "Olympus has Fallen" star decided to have some fun with the British troops before a special army base screening of his new action-thriller on Thursday (April 4). Butler considered it a "moment I will not forget."

And YouTube users seem to definitely approve of Butler letting loose with some of his fans!

ByVeggies: ":D its funny and cool to see actors do these kind of things."

ucouldbedancing: "Lol Sometimes you are such a goober and I really love that."

xJennyActsx: "THIS. This is just too awesome."

And then there's Keegan Allen, Ashley Benson, Lucy Hale, Shay Mitchell, Tyler Blackburn, and Troian Bellisario breaking it down "PPL" style. Allen posted the viral video on Monday (April 1). Watch and enjoy:

Which "Harlem Shake: Celebrity Edition" do Mstars readers prefer?