Some of my favorite sites for checkin Bitcoin activity, or pool "dominance" and stuff:

BlockExplorer:
http://cur.lv/2u34

BitcoinCharts does a beautiful, colorful job:
http://cur.lv/2u36

And of course, The pool hash distribution pie chart:
http://cur.lv/2u38 

Thanks for reading, I hope you enjoy these sites as much as I do!