Kevin Spacey Sings the 'Ghostbusters' Theme as Bill Clinton for Halloween

Who you gonna call?
Kevin Spacey on the 'Tonight Show'

A leading contender may have just emerged to sing the theme for the upcoming Ghostbusters reboot.

Kevin Spacey appeared on the Tonight Show on Friday, where he faced off with Jimmy Fallon for a round of Halloween-centric celebrity impressions.

See more The Many Faces of Kevin Spacey

The House of Cards star unleashed a number of impeccable impersonations, including his impressive Christopher Walken voice.

Watch more See Kevin Spacey Call Hillary Clinton as Bill Clinton

But his best one may have been of former president Bill Clinton performing the Ghostbusters theme. This one really must be seen to be believed.

Watch the video below.

Twitter: @_RyanGajewski