Good strategy games

[Senlis]

I'm starting to find myself running out of good strategy games to play, both RTS and TBS.

I've played Civ IV and Advance Wars for my TBS gaming.

I've played World in Conflict and Total War games for my RTS gaming.

Have I missed anything?  Is there any RTS/TBS strategy games that can beat any of those.  Your input would be greatly appreciated.

Secondary question, is Napoleon Total War really any different than Empire: Total War?  Didn't they happen in the same time period?