Entertainment Weekly reports that the ABC series featured a finger gun shoot-out inspired by a similar moment in Spaced.
Cougar Town's executive producers Bill Lawrence and Kevin Biegel explained that they included the reference because they are fans of the show.
"We are both self-proclaimed TV nerds and Spaced is such an awesome show that we wanted to give it a 'shout-out'," they said. "Plus it was easier than writing our own joke."
Meanwhile, Spaced star Simon Pegg wrote on Twitter: "Imitation is the sincerest form of flattery. That was always our motto."
Cougar Town continues on Wednesdays at 9.30/8.30c on ABC.