You should watch:

The Naked Now

This was episode number 2 of season 1.

The following characters appeared in this episode:

(as Benjamin W S Lum)Jim Shimoda
Captain Jean-Luc Picard
Counselor Deanna Troi
Commander Wiliam T Riker
Conn
Doctor Beverly Crusher
Engineering Crewman
Kissing Crewman
Lieutenant Tasha Yar
Lieutenant Geordi La Forge
Lieutenant Worf
Lt Commander Data
Sarah MacDougal
Transporter Chief
Wesley Crusher