I wouldn't call myself a massive COD fan, I played a few times at my friends house and got killed most of the time but I bought World at War and got a bit better. Black Ops is an improvement to previous COD games: Graphics are better (Not massively but still better) and sound quality is SO much better. The Campaign is a bit too American for my taste, I have to say it's a pretty good story line and an impressive leap for COD in my opinion but it is very much 'We're America, lets go and kill some Communists'. But gameplay is fantastic, you get to utilise a massive expanse of weapons and vehicles and it's fast paced and packed. A downside with the campaign is that it is very short, like I said, I'm not a big COD fan and I managed to complete it in a few weeks without playing it every day.
Multiplayer is really good, doesn't freeze and lag as much as other COD games have and for those of us that are new to the difficulties associated with COD there's Combat Training, something my dad could do with. Combat Training's a good way to get used to the multiplayer system and maps. Customisation has reached the ridiculous point of how much you can do to individual gun and reflecting on your stats has also reached that ridiculous stage: Everything has a recorded stat and I'm not joking.
So campaign good, multiplayer really good.