Better Stats Concept?

I’m looking for a way to get better stats on a few things.

Specifically, stats on groups of articles.

Let’s say I have a bunch of articles tagged “chickens”.

I’d like to know the collective pageviews that all those articles got. I’d also like to know the collective number of comments. Ideally I’d like to go even further and find out the collective tweets and other social networking things about them.

Does anyone offer an all-in-one way to do this? Or am I stuck adding these up one by one? Any way to get Google Analytics to recognize the tags in my posts?

Thanks!