Carrie Fisher, Harrison Ford and Mark Hamill were all spotted over the weekend in London, where J.J. Abrams will soon begin shooting his first installment in a new Star Wars trilogy. While no casting news has been confirmed for Abrams' franchise reboot, all three actors have recently hinted that they'll be making cameos in the new movies. Peter Serafinowicz, the actor who voiced Darth Maul in The Phantom Menace, tweeted a photo of himself with Hamill, writing coyly in the pic's caption, "I wonder why he's here."