This movie was not good. Not at all. It tries to be comedy, but it has two jokes, both of which are repeated ad nauseum.
1. A character makes a reference to something modern (e.g. Air Gordon)
2. Will Smith is black.
That's the extent of it, and they use these jokes over and over and over and over. They weren't funny the first time.
Anyway, the story is simple. Jim West (The Fresh Prince of Bel-Aire) and Artemus Gordon (Kevin Kline) have to stop Spiderman (Kenneth Branagh) from taking over the country and dividing it up into smaller countries. Along the way, they pick up Serendipity, a muse who's married to one of the scientists captured by Spiderman. Throughout the movie, we're treated to many jokes involving Will Smith's blackness, and we get to see Kevin Kline's amazing inventions (including the physically impossible flapless airplane). There's a climactic scene where, well, there really isn't a climactic scene. We were all hoping for one, this being in the Action section of the video store, but there really wasn't one. I will say, however, that the closest thing resembling a climactic scene was more climactic than the pseudo-climactic scene in Jill the Ripper.
Oh yeah, and the guy who played Buffalo Bill in Silence of the Lambs was in it too.
And to think that Will Smith was convinced that Wild Wild West would gross more than The Phantom Menace....