If your going to see Jurassic World this weekend, driven by the inate curiousity as we are of how did it make all that much money when the trailers were so 'meh!' (in Mike's opininon) it is worth watching the above clip from the Academy Orginals series about what created all the fuss in the first place.
If you were around when the first Jurassic Park, like we were and remember seeing it, we hope it had as profocund an experience as it did with us.
Also it is interesting to note how much the practical VFX of Stan Winston and his crew were as critical (and were on screen for longer) to the whole experience. It only seems that in the past few years that practical effects are gaining traction again whether by themselves or augmented with CG, which Jurassic Park was the originator of!