Out of all or the Stephen kings mini series,this was probably the biggest letdown for me. But I will give the spider some credit though. Despite the Spider being one of the worst animatronics I've ever seen(though to be fair it was low budget),its still better than The horrible CGI Langoliers and The shining remake. Heck even better than the Son of mask CGI effects(btw that it is one of the worst movies I've ever seen)and that ones newer.
I actually think with the small budget, short air-time frame, short production-time frame, the television restrictions and the low budget for staff they actually pulled off a pretty amazing miniseries for It. It's certainly not as affevtive as the book, but they did a good job filtering out the unnecesary stuff and keeping the more pivotal things. Even the things they left out they make reference to. Many of the instances with Mike and Henry when they were little are referenced to, Patrick is referenced to, and several other things they didn't have time to actually feature. I will admit that by the second half it begins to get really ridiculous. By the end it is more funny than scary, but the overall movie isn't bad in my opinion.