has taken on a variety of roles in his career, but this smaller gig may be his goriest.
The actor, 31, stars in an eight-minute music video
for a song by the French band The Shoes, called "Time to Dance."
In the clip, Gyllenhaal shows up at house parties and nightclubs, where dressed in a costume covering his face, he slashes guests for no apparent reason.
The very vivid killings show a seemingly composed Gyllenhaal creating bloodbaths in between hitting the gym and getting his face shaved.
Once the murders are complete, he relaxes by smoking cigarettes – and in one scenario, pops what appears to be a pill of ecstasy.
Looks like a guy to keep off your guest list.