The "World" series is complete and utter garbage. It manages to make Jurassic Park 3 look good, and that was terrible.
The first one though, will forever remain a masterpiece for me. Granted, there is some nostalgia involved as I first saw it as a little kid in the cinema back in1993 (never understood how they let me in) and it kickstarted a dinosaur obsession in 6 year old me. I rewatch it at least once per year and I still get goosebumps at that scene where Sam Neill and Laura Dern first get to see the dinos, with John Williams' brilliant, swelling soundtrack behind it. And then of course Richard Attenborough's famous "Welcome to Jurassic Park" line. It's probably my single, favourite scene in movie history.