Let's see:
Miri: LOVED it for the first act, but once we get into the "nyah nyah bonk bonk" stuff, I'm out.
Dagger of the Mind: Holy Christmas, what a great episode....until we get downstairs. Helen Noel is totally unprofessional and Dr. Adams is badly miscast.
The Omega Glory: I can't tell you how much I love this episode until the mystery is revealed to be a non-event. Before even the flag shows up, the "they live centuries because it's natural" makes Tracey an idiot instead of just a fanatic.
The Enterprise Incident: Great stuff but when Spock and the Romulan Commander play footsies, the episode just crawls.
Since we're brining STTMP into it's a solid film until they reach the cloud. Then it dies. But, to its credit, the moment Ilia comes back as a probe, I get really interested again, because there's plot movement.