Honestly, it really depends on the subject. Like what Keith said, it was the best year for Tokusatsu being that it had so many great shows in that genre both in Japan and the US (Dragon Knight. Decade, Shinkenger, Rescue Fire, RPM, and W/Double). It's also the worst year in deaths because a lot of famous celebrities died just like last year.
I also think 2009 was a great year for the Wii because it released a lot of great games.
But yeah, I really can't judge the year overall. It really depends on what aspect.