1. Kamen Rider Blade- Interesting series, interesting action, interesting characters, brilliant ending (best in any recent rider series) and awesome second opening.
2. Kamen Rider 555- So it was a mess, and sometimes development was so imbalanced to the extent I still can't recall the name of the guy who became Delta. But the stories of some of the characters, i.e. Kiba, Osada, Daigo, Takumi and even Kusaka, were great. Paradise Lost was amazing too. It was a shame that it went downhill towards the end.
3. Kamen Rider Den-O- terrible pacing, but a good series. Good acting, one or two good designs, relatively good special effects, good drama and character towards the end when the plot kicked it up.
4. Kamen Rider Kabuto- Some incredibly annoying characters and arcs, some great designs and action, but the times it did make you feel for the characters were good (rise of Kagami, Rena's humanity, Tendou's love, Tsurugi's secret, the Hoppers' brotherhood)
5. Kamen Rider Kiva- half great half above average at best.