Gotham, an absolutely insane show that once blew James Frain up with a bazooka, has gone straight-up off the deep end in the lead up to its fifth and last finale coming up on April 25. We already knew that the series' final episode would jump forward several years and feature David Mazouz playing a suited-up Batman, but a new teaser, simply titled "J", revealed the first look at Cameron Monaghan in full-on fucked-up Ace Chemicals bath Joker make-up. "I feel something new," Monaghan says in the video after some Arkham Asylum establishing shots. "Something... …