Like Matrixbeast said, once Dr. Maki revealed his insideous plan the series began to roll, but I think the series got better once Date Akira was introduced as Kamen Rider Birth, because his charisma and humor provided a spark for a series that was otherwise humorless (except for Kougami's silly antics). OOO is a series that gets stronger after Maki joined with the Greeeds, and has a fantastic ending that really redeemed the show's overall perception, so I can't really hate on it like I do for Decade.

Saw the movie just yesterday. I hadn't enjoyed a movie like this in a long time and I hope the movies of the future are of this quailty as well. Fourze's part was just OK but the other parts were superb, with OOO's, Double's and the Showa Riders being the best. The final part was a tad rushed but it was still great. Overall it was quite well made.