Heart and Souls
Years later, Thomas has grown into a man that handles bankrupt companies.  The four of them are still attached and have no choice but to follow him wherever he goes.  Soon, Hal comes down and tells them they all need to go up to heaven.  However, all four of them have not yet tied up all the loose ends in their lives.  They learn that Thomas is supposed to help them resolve everything on Earth before they leave.  They make themselves visible to Thomas and tell him he needs to help, but refuses at first.  He agrees to do whatever they want after they take over his body – their new power as ghosts – and make him do crazy things at a board meeting.