I like the album for the majority, but like Casey said, sometimes the lyrics can be predictable & cheesy. Other than that, it's great.
I always found James LaBrie's lyrics cheesy as Hell, but I really don't mind. I mainly focus on Petrucci and Portnoy when I'm listening to Dream Theater. I love the band for all their worth. As for Octavarium, I enjoy the upbeat tempo that the entire album sets in motion. The song Octavarium is probably my favorite.
I downloaded a live video of Dream Theater and they looked fucking boring. The mosh was so mellow. The band didn't look like they were into it at all.