Zooey Deschanel is mourning the loss of her good friend Rob Reiner. As you know, the director and his wife, Michele Singer Reiner were brutally murdered on Sunday night. Since then, Hollywood - and the whole world of movie fans, really - has been flooded with devastation. On Instagram Monday, Rob's New Girl costar shared a heartbreaking memorial post of their time working together on the show. The post featured a carousel of photos of Zooey, Rob, and her onscreen mom Jamie Lee Curtis. The Jess Day portrayer wrote in the caption: "My heart is broken.