I am a huge fan of the first two films. The music, the acting, the suspense, the Goldblum...it's easy to forget how funny the first film is amidst all the tension.
From a technology and graphics point of view, I still always refer to the first shot of the T-Rex snapping the fence wires and taking those steps out of the enclosure to be the single greatest and most flawless cgi creature achievement in the history of special effects cinema, even still. For me, anyway. Next to "Raiders", the original "Jurassic Park" is my favourite Spielberg film.
EDIT: Not a big fan of the third film however. Even seeing it at the movies as an impressionable teenager I felt the tone was off and that it was too self-aware of itself and the franchise it was now apart of. But I appreciate other people may like it.
Anyway, let me know if you need any help with anything Mr. Wolf!