This can be the best Star Trek film with William Shatner in it. Star Trek IV blends the wow factor of the cool future with the present idiosyncrasies of the 20th century. To achieve this, Star Trek's plot needed the cast to travel back in time to save the future world. All throughout the movie, the cast will encounter perils both mundane and critical. Their solutions to these are clever and engaging. Acting by Spock is spot on , while, acting by Kirk is absorbing. The rest of the cast leave their marks on the film. This is definitely a 4 out of 5 stars for me!