i'll be honest, i saw the original a few times when i was younger and i thought it was boring. About 6 months ago though i picked it up on bluray cause it was on sale for like 8 dollars. I watched it with my girlfriend at the time and boy did my views change. Such a great movie. Kubrick just slowly builds this blanket of tension and uneasiness until the climax at the end, it's awesome. Jack's descent into madness is captured flawlessly. Really great film.
I've seen bits and pieces of the miniseries and i didn't think it was bad, but i can't give my full judgment on it cause i've yet to see the whole series.
oh and, incase anyone hasn't seen this, this is probably my most favorite version of 'the shining'
http://www.youtube.com/watch?v=sfout_rgPSA
that video is hilarious.