On The Graham Norton Show, Hugh Jackman tells Graham that Michael Fassbender had to be coaxed onto the set during the filming of X-Men: Days of Future Past.

So Hugh Jackman, along with Michael Fassbender and James McAvoy, demonstrated how they had to get Fassbender on set using Robin Thicke's "Blurred Lines". Then they all danced together like the best sausage slumber party you could only fantasize of having: