I think that the original Lilo and Stitch is the best animated movie ever made. I was 19 when the original came out as well. When I heard about Stitch! The Movie I was skeptical, but that was basically just a two-hour long episode of the show they were planning (which is quite funny, albeit the animation is not up to par). But, when this movie was announced I was really worried. How were they going to stick a movie in the movie of two established time periods? Well, I was *very* impressed with the animation, but at only 68 minutes long, I knew from the start this movie was going to be a let-down. I thought it was quite funny, but it could have been so much more. Chris Sanders is hilarious, I'm not sure why he hasn't demanded that he has more to do with this series and not just Stitch's voice. I also have *no* idea why Daveign Chase (the original Lilo) did not play her in this movie. It's never been explained why. Dakoda Fanning did a great job, but Chase is already doing Lilo's voice for the TV show and everyone else reprised their roles. All in all, the jokes they did do were very clever, but the plot could have been stretched out into a longer movie.
