I played Pokemon Black last week for around 3 hours. I hated it. Reasons include:
1) Literally EVERY pokemon I encountered I had no idea who it was.
2) Waaaay too many talking, at least during the first hour or so.
The first 151 pokemon or so FTW!
Although I still had enjoyed Pokemon Ruby very much, but in Pokemon Black I couldn't recognise not even ONE pokemon.
There were some aspects to the gameplay which I enjoyed though, but I won't be playing the game anymore.
For the record these are the pokemon games I played and beat throughout my childhood/teenage years:
Pokemon Red
Pokemon Yellow (I never beat this, never liked Pikachu)
Pokemon Silver and Pokemon Crystal
Pokemon Ruby and Sapphire (and Leaf Green, but I never finished it)
My childhood consisted of A LOT of Pokemon and Morrowind.