Kailansorac Clever, believable, and super fun to watch. It totally has replay value.

Bea Swanson This film is so real. It treats its characters with so much care and sensitivity.

Bumpy Chip It’s not bad or unwatchable but despite the amplitude of the spectacle, the end result is underwhelming.

Philippa All of these films share one commonality, that being a kind of emotional center that humanizes a cast of monsters.

Owen Ogletree The third of the Mook Animation Scooby-Doo movies is another great one. People thought that Scooby-Doo couldn't be frightening, but then along came "Zombie Island." People then thought that Scooby-Doo couldn't affect them on an emotional level, but that's just what this movie did.We get to see a side of Shaggy and Scooby we had never seen before. In this film, Shaggy falls in love with a hippie named Crystal, and Scooby falls in love with Crystal's dog, Amber. Meanwhile, the rest of the gang is trying to solve a mystery involving aliens that may have been spotted.The true stand-out in this film is Shaggy and Crystal's charming and heartwarming romance. It feels very real and gets you invested in it. They have more chemistry than Fred and Daphne could ever hope to have.The animation is once again spectacular, and the landscapes are nice to look at and very well-detailed.The "groovy" song that played in the middle of the film was one of the sweetest songs I've ever heard and the ending where it's revealed that Crystal and Amber are aliens is very heartbreaking, making you really feel for Shaggy and Scooby.One issue with the film is that the mystery is very basic and rather forgettable. That does hold it back a little.However, this was still another great entry in this beloved franchise. While it doesn't match "Zombie Island," I'd say it's about on par with "Witch's Ghost." Highly recommended for Scooby-Doo fans.RATING: B+

kyle-mcdonald I have to say I have always loved Scooby Doo and I will always love Scooby Doo and if you also love Scooby Doo you will not be disappointed with this movie. Let me get started by saying that the storyline the movie follows is very cool and interesting, I found that it was very well written and came out good on screen. The animation in this movie is very well done all of the characters are very well drawn and look good. The voice over actors are very good such as Scott Innes as Scooby Doo and Shaggy, Mary Kay Bergman as Daphne, Frank Welker as Fred, B.J. Ward as Velma, and they even have Mark Hamil as Steve. The voice over actors do a great job with there voices and sound great. So make sure you rent or buy Scooby doo and the Alien Invaders.Overall Score: ********* out of ********** ****1/2 out of ***** Some may consider this a spoiler so that is why I saved it for last. I have to say how I liked the way they used both real and fake aliens in this movie, The main villains were people in masks and if you watch the movie you will see how they used real aliens.

lordzedd-3 I liked Scooby-Doo and the Alien invaders. A whole new mystery in the lines of ZOMBIE ISLAND and WITCH'S GHOST. But Cassey Cassum's presence lacking still keeps this from being a perfect 10. But other cast members do a great job. The aliens are cool, ugly but cool. The clues works and the excitement never dampers. If you love Scooby-Doo and the other Scooby Movies, then you must add this to your collection. The animation is perfect and all the classic characters are there. Now if you aren't a Scooby-Fan, then this isn't the movie for you. But if you never saw anything Scooby related, then this is a good place to start. 9 STARS.

Brian T. Whitlock (GOWBTW) An avid fan of Scooby Doo that I am, this movie is the one! Despite the changes, Scott Innes doing Casey Kasem's role as Shaggy this movie is fantastic. He and Scooby meet the woman and dog of their dreams. The team investigate a mysterious sighting where the locals are not speaking. As for Shaggy and Scooby, I liked the video they made called "Groovy", I could agree with them more. The duo were worth the save when then dirty feds try to do them harm. And I think when Shaggy spiffies up, everyone should call him by his real name: Norville. I was very surprised when the the duo were alien agents, they were stuck in the fashion time warp which Shaggy lived in. And it was a heart wrencher when they left. But I wondered who was affected more, Shaggy and Scooby? or Fred? That part was sad, but it was even sadder that Mary Kay Bergen had passed on. That to me was a bigger heart wrencher. Despite of it all, it was a very good movie. Don't feel bad guys, the whole thing will indeed make your day. Enjoy it with all your Scooby Doo cartoon classics. A REAL KEEPER. SCOOBY-DOOBY DOOOOOOOOO!!!!! Rating 4 out of 5 stars.