You should watch:

Force of Nature

This was episode number 9 of season 7.

The following characters appeared in this episode:

(uncredited) Ensign Jae
(voice) Enterprise Computer
Captain Jean-Luc Picard
Counselor Deanna Troi
Commander Wiliam T Riker
DaiMon Prak
Doctor Beverly Crusher
Dr Rabal
Dr Serova
Lieutenant Worf
Lt Commander Data
Lt Commander Geordi La Forge