Reports the Heat Vision column, "The comedian has been circling R.I.P.D., Universal's supernatural action comedy about a ghost-busting police force, since the fall.... R.I.P.D. follows a murdered cop (Reynolds) who is recruited to work in the Rest in Peace Department, a police force comprised of ghosts who battle spirits unready to depart this world. If a deal is made (negotiations have not yet begun), Galifianakis will play Reynolds' partner, a wise-cracking officer who's been hunting spirits since the 1800s."
This isn't the Hangover actor's first brush with the dead - for two seasons he played the character Davis in the Eliza Dushku series, Tru Calling.