Sitting cross-legged on a rehearsal mat for the new Mortal Kombat movie, Lewis Tan felt an overwhelming sense of gratitude. He played on this kind of mat as a kid while his father, martial-artist Philip Tan, worked on Hollywood sets as a fight choreographer and second-unit director. Tim Burton's Batman films with Michael Keaton. Demolition Man with Sylvester Stallone. Indiana Jones and the Temple of Doom with Harrison Ford. "I grew up on these films [and] around these guys," Tan says.