If you are into Google Buzz…Buzz-Stats.com offers a cool Buzz badge that displays your current followers. The badge also acts as a link to the Buzz-Stats user page associated with your badge. Here people can see stats about your Buzz activity and they can also follow you.
There is also a graph of sorts provided. I believe it only displays the number of followers you have on any given day. Not much change happens on this graph.
Here is the Buzz-Stats page where you can create your own Buzz-Stats badge.