In which Q shows his enthusiasm for cosplay, and Riker kinda shows his enthusiasm for Wesley.
Memory Alpha says: Q returns with a new test for the Enterprise. Can Commander Riker resist the power of the Q Continuum? (Please click the Memory Alpha link for detailed information.)
My Review
This episode marks the second time we see Q, and that establishes a tendency that will grow more pronounced over the course of TNG until it eventually gets really awesome in DS9, towards greater continuity in Star Trek. That's not to say there is no continuity in TOS; you get recurring outside characters like, um, Harry Mudd is the only one who comes immediately to mind (I've also found that a lot of people have trouble remembering that Cyrano Jones, from 'The Trouble With Tribbles,' is not Harry Mudd, because selling tribbles just seems like such a Harry Mudd thing to do).
This is one of the episodes that I really can't remember watching, except a vague memory of Tasha saying she was in a penalty box. Is that this one? Well, I'll find out, won't I?