I don't really have any nostalgia for Jurassic Park. The summer it came out I never saw it in the theater, only watching it once at a drive-in (and even then the fog rolled in about halfway through). In retrospect, that's weird--at the time I loved Spielberg's movies and Crichton's novel, and even more than that I just loved dinosaurs. The lack of a driver's license at the time, or a nearby theater playing the movie, led to me missing the original release.
Anyway, once I did see it, it left me flat. The kids are terrible actors, and Grant and Ellie aren't much better. The plot is fine, but there are a lot of loose ends that they never follow up on (like, why was the triceratops sick? I read the book, so I know, but the movie takes a detour and never gives a reason for it). And the story in general is very thin--there's just not a lot there. It moves the characters along a fairly rote path from setpiece to setpiece but you never care about any of them. And while Malcolm is now kind of a folk hero, A) I found him annoying as a character and B) he disappears at the halfway point anyway.
Compared to modern effects the CGI dinos look terrible, but the "creature effects" puppets still hold up to the test of time. The cinematography is very Spielbergian, and the technical aspects of filmmaking are nailed, as you would expect.
All that adds up to a movie I can respect, but don't love. Three stars.