It's no secret that Michael Jackson wanted his This Is It concerts to be a mind-blowing spectacle. With the release of the new documentary "Michael Jackson's This Is It," fans like "America's Best Dance Crew" host Mario Lopez can finally get an idea of what the world missed out on.

"Well, I'm a huge Michael Jackson fan. He can do no wrong in my eyes, so I was going to love it regardless," Lopez told MTV News on Wednesday (October 28) after seeing the film at the L.A. premiere. "But I thought it was awesome. I thought it was such a great preview of what could have been. ... I mean, it was really a huge spectacle. It was probably going to be the coolest concert, I think, that was ever around."

Lopez had high expectations for the film, but he was definitely floored by it, particularly Jackson's rehearsal performances. "He wasn't going full-out, but I didn't think it would look as polished as it did," he said. "And it was like we got to see the concert without actually seeing it. Every detail and aspect was pretty cool and pretty amazing. And to see that he was just marking it and not doing it full-out and it was still amazing performance, it's like, 'Man, I would love to have seen that live.' "

What surprised Lopez most about the flick was Jackson's tough demeanor. It was a side of MJ he didn't expect to see. "He came off as a perfectionist, involved in every aspect, every detail," Lopez said. "I don't know why I thought he'd be a lot more silly and goofing around, but he was very, very serious."

Describing the mood in the theater as "very festive," Lopez recalled how much he enjoyed some of the ideas that Jackson had come up with for the show. "I liked everything about it. It was very educating," he said. "And I know [director] Kenny Ortega pretty well and [choreographer] Travis Payne, and it was cool to see them in their element. I like the stuff when [Jackson] was with Humphrey Bogart and the 'Smooth Criminal' stuff. I thought it was very clever."

Check out everything we've got on "Michael Jackson's This Is It."