Josh talks about working with Mel Brooks on Spaceballs 2, doing an impression of him, moving to Hollywood and having a surreal moment with Robert Downey Jr, his new children's book PictureFace Lizzy, Kristen Bell doing the audiobook for him, and George RR Martin helping him on his book tour, and writing a memoir. Watch 'Jimmy Kimmel Live!' WEEKNIGHTS 11:35/10:35c on ABC. Stream on Hulu.