You should watch:

Ship in a Bottle

This was episode number 12 of season 6.

The following characters appeared in this episode:

(voice) Enterprise Computer
Barclay
Captain Jean-Luc Picard
Countess Barthalomew
Counselor Deanna Troi
Commander Wiliam T Riker
Doctor Beverly Crusher
Gentleman
Lieutenant Worf
Lt Commander Data
Lt Commander Geordi La Forge
Moriarty