The movie game!
The poster will name an actor who was in _____ movie, with _______actor, who was also in.....
then you come in and finish sentence, taking the actor listed, saying a movie he/she was in, and a costar of that movie, who was also in.....next person and so on.
Here's an example:
Jim Carey was in "The Mask" with Cameron Diaz, who was also in...
(next person could say)
"My Best Friend's Wedding" with Julia Roberts, who was also in...
(and the next person leads with a movie Julia Roberts was in)
So, to start...
Johnny Depp was in "Edward Scissorhands" with Vincent Price, who was also in...