You should watch:

Sarek

This was episode number 23 of season 3.

The following characters appeared in this episode:

Captain Jean-Luc Picard

Chief Miles O'Brien

Counselor Deanna Troi

Commander Wiliam T Riker

Doctor Beverly Crusher

Ki Aloysius Mendrossen

Lieutenant Worf

Lt Commander Data

Lt Commander Geordi La Forge

Perrin

Sakkath

Science Crewman

Sarek

Wesley Crusher