Woa! This is going to be epically awesome. It looks like they spared no expense with the special effects. It's almost Harry Potter-like, which is probably because Chris Columbus, who did Sorcerer's Stone and Chamber of Secrets, is directing. The only thing I'm concerned about is the writing. Newcomer Rick Riordan is adapting and he could piss off a lot of fans. I, personally, only read as far as Percy's arrival to the camp, but I don't recall there being a magical elevator.
Take a sneak peek at what appears to be Mount Olympus:
Release Date: Feb. 10, 2010