I LOVED Ghostbusters when it came out. I think I saw it four or five times in the theater. It's probably been 10 years since my last full viewing of it, and I watched it again with my kids last month and I don't think its aged well.
The special effects are poor (understandable since it's 30 years old), the score is mostly terrible, and the pacing of this movie seems off.
There is also one line that completely bothers me. Dan Akroyd is telling the mayor how Peck turned off the power grid, and his delivery of "until the power grid was shut off by dickless here..." is very awkward. It feels like an alternate take, and you can almost tell that he really wanted to say something like "until dickless here turned off the power grid" but he changed his mind going into it.
Still a good movie, but it's not what I remembered as a 15 year old.