As a faithful X-Phile who's been watching the show since the pilot aired (I was in third grade. Heh.), I was really looking forward to IWTB.
The Good
* Um, it's an X-FILES MOVIE. Need I say more? I've been waiting a damn decade for another movie, so I was just glad that it finally existed. * There was a hilarious Dubya reference. * Xzibit? Really a pretty good actor. * Mulder and Scully were in bed together! And they kissed! And they had this cute lovey relationship! I'm sorry for getting all shippery and fangirl, but I missed the Mulder-Scully chemistry. The reason the show didn't work after Duchovny left (well... kinda left) is that Mulder and Scully ARE the X-Files. Doggett and Reyes never could have carried the show. I love them as characters, and they served their purpose in the plot, but... no. They are not Mulder and Scully. * Awesome references to the show: sunflower seeds, pencils in the ceiling, The Poster, mentioning William, having Skinner make an appearance. Very cool. * The overall theme of the story, about passions for people and passions for work and how they can conflict and interact and compliment one another, was great.
However, the movie was not without its share of problems.
The Bad
* I like Scully better with shorter hair. Not that I don't still think Gillian is absolutely gorgey, because I do, but Scully needs the bob. And not that craptastic big-bangs thing she had going on in season one. We (the collective fandom) pretend that didn't happen. * Cancer Boy could have been left out of the story, and it really wouldn't have hurt the plot any. That whole substory was kinda sentimental and cheeseball, if you ask me, and it felt like it had been added in just to reference and address the William issue. * Nobody brought up the fact that we're supposed to be taken over by the aliens in four years. I know this wasn't a mytharc story, but... helloooo? Impending colonization? Enslavement of the human race? Not even a mention. * I thought that the creepy head-transplant scenes could have been... well, creepier. I would have liked to have seen more of the laboratory, and more scenes demonstrating the surgical process. And more of the blinking, disembodied head. Maybe in a pan of neck juice, to pay homage to The Brain/Head that Wouldn't Die. * The score was... off. Mark Snow did the score, but it just didn't feel very... X-Files-y. I dunno. If I hadn't known it was Snow conducting, I certainly couldn't have said, "Oh, this is Mark Snow's music." It wasn't his signature X-Files style, and it kinda threw me off. * The ending was... meh. I'd really like to see a follow-up movie to wrap up everything with the aliens and the mythology, because this one kinda left me wanting more closure to that end of things. I can haz one moar, Chris Carter?
Overall, I loved the movie, despite its flaws. Because, like I said, X-FILES MOVIE.