Okay, I haven’t read any Stephen King in years, (ever since the pitiful disappointment of the second installment of The Gunslinger series, as it happens,) but I was given Dreamcatcher as a gift and have been enjoying it for what it is. [sup](The literary equivalent of “a cheeseburger and a side of fries,” in Mr. King’s words.)[/sup]
I’m about halfway through, and while the story is still pulling me along, I’m wondering if all the references to other (non-King) works are intentional, and get elaborated on or what? Some of them are logical enough, for the genre. The Alien references, for instance. At first I was wondering if the “Jonesey” thing was unconscious, until he started tossing “Ripley” around as well. (Not to mention “5X5”) At first I thought that the choice of the name “Kurtz” was just an attack of monstrous lack-of-creativity on Steve-o’s part, until I realized that Alien had it’s share of Joseph Conrad references as well. So… any more of this stuff to look forward to?
Larry, honey, I don’t think it’s possible to have a “spoiler” for a Stephen King book. We all know how they come out anyway–everybody dies, except sometimes the kid. 
You’re not the only one who’s noticed a “lack of creativity” on King’s part for this one.
http://bookreviews.nabou.com/reviews/dreamcatcher.html
http://www.salon.com/books/review/2001/02/22/king_searcy/
http://www.popmatters.com/books/reviews/d/dreamcatcher.html
Yeah, Dreamcatcher stumbled a bit and was much to long (I mean that in a figurative way, some books deserve to be 700+ pages, Stephen King’s own Salem’s Lot for example) but there is some value in reading it. If you’re a die hard SK fan then I suggest you read this book after SK’s “The TommyKnockers” (which is a much better book, and certainly better than the movie.)
The two books in combination are a complete tale, and if SK had scaled down Dreamcatcher to a subnovel it would have fit right into the TommyKnockers. But alas, he didn’t. I still think he’s a fantastic writer (I read both his previous books, Bag of Bones (Fantastic book and also a great audio book - Stephen King reads it himself) and his short nonfiction “On Writing” which was an account of his life and struggles.)
But to answer your question, yes, there are plenty of references to other books and movies in the Dreamcatcher. He references his own books as well. “It” is brought up several times and there is even a chapter where the boys in Dreamcatcher stumble onto the stomping grounds of Pennywise.