Star Trek: Generations (1994)

Captain Kirk and Picard get together after meeting in "the ribbon": a utopia where time doesn't exist. Picard is trying to enlist Kirk's help in stopping Soran, a scientist who's been trying to get back to the ribbon for decades. See, the Enterprise -- via Kirk's heroic sacrifice -- pulled him and many others out of the ribbon in order to save their lives and Soran's so desperate to get back that he'll destroy a populated planet to do so.

It's pretty much just an extended episode of TNG, but with short shrift given to most of the crew in favor of time with Kirk and Soran. Oh, and Data has feelings and a new complexion now.

C