Ruben Fleischer's Zombieland featured an awesome cameo by Bill Murray as the main characters crash at his seemingly abandoned crib in Hollywood.
They get stoned, watch Ghostbusters and generally chill. Bloody-Disgusting claims to have come across some "inside info" on Fleischer's Zombieland 2. Apparently, Columbia Pictures are planning another "superstar cameo" and they are searching for someone iconic along the lines of "Harrison Ford" or "Anthony Hopkins". In addition, the script calls for a lead villain with comedic roots, while Tallahassee [Woody Harrelson] will find himself going head-to-head with a "hunky rival". Jesse Eisenberg is the only other star officially attached at this point.