You should watch:

The Measure of a Man

This was episode number 9 of season 2.

The following characters appeared in this episode:

(archive footage) (uncredited) Lieutenant Tasha Yar
(voice) (uncredited) Enterprise Computer
Admiral Nakamura
Captain Jean-Luc Picard
Commander Bruce Maddox
Chief Miles O'Brien
Counselor Deanna Troi
Commander Wiliam T Riker
Doctor Pulaski
Guinan
JAG Captain Phillipa Louvois
Lieutenant Geordi La Forge
Lieutenant Worf
Lt Commander Data
Wesley Crusher