I've always loved the TV series. I get that they wanted to stick to a family-friendly theme, but for long-time fans, that can get a bit tired. The film could've had a darker tone similar to the series. The whole idea of the gang ''splitting up'' was so cliched even in those years, a more original story like how the gang met would've worked better. The actors that were chosen for their respective roles made the cartoon come to life properly, so in other words, they were perfect. Being a car fan, I loved their interpretation of the Mystery Machine, even though it might not be an exact replica of the cartoon version, it is still a pretty badass van, though I keep getting surprised by Pamela Anderson appearing in the film. Scooby stole the show, even though it is his own show. He's funny, adorable and clever. If they decide to produce a sequel to Scooby-Doo 2: Monsters Unleashed, they should make it a darker tone, like the new Power Rangers film is, and bring back the original cast. I loved Simple Plan's cover of the theme-song, I just wish it could be slightly longer, maybe they could've added more verses to the original theme. If they produce a new sequel, with today's special-effects, a darker tone and big budget productions, the film will be a massive hit.