Having already stirred up a fair amount of controversy for its nihilistic R-rated storyline, Joker has now come under fire for using a track by convicted pedophile Gary Glitter on its soundtrack ...

Movie audiences have gone wild over Joker, with the movie setting an opening-weekend box office record for an NC16-rated film in Singapore, with $1.89 million. Read more at straitstimes.com.

The song, “Rock and Roll Part 2,” plays for about two minutes as star Joaquin Phoenix, who plays the Joker, dances down a flight of stairs. And that’s not all.

Joker the movie was not the first popular movie to use the song, either, as it was featured in Meet the Fockers, which came out in 2004 after Gadd was arrested.

Of note, Lady Gaga also wrote original songs inspired by Joker: Folie à Deux for a separate album, Harlequin, but only one of these tracks, "Folie à Deux," is part of the official soundtrack.

What happened in "Joker: Folie à Deux"? Joaquin Phoenix, Lady Gaga and director Todd Phillips break down the wild ending and Gaga's triumphant song.

Despite the wave of controversies, “Joker” is making quite a bit of money – bringing in an estimated $93.5 million in North America alone in its opening weekend.