Star Trek V: The Final Frontier
Kirk and company are called back from shore leave when there's a hostage situation on the "Planet of Galactic Peace" (Nimbus III) in the neutral zone. There are other ships available but no experienced commanders, so Admiral Harve Bennett (in his only cameo appearance in the 4 ST films he produced) "needs Jim Kirk." It's a very TOS-ish over-the-top type of story where Spock's long lost half brother commandeers the Enterprise (thanks mostly to her skeleton crew) and takes it to the center of the galaxy, followed closely by a Klingon Bird of Prey. Personally, I think it's a great movie.
