This plugin (widget ready) allows you to retrive latest feeds from Google Buzz service. It has some advanced options like caching
Google Buzz plugin for WordPress allows you to get latest Buzzes for your Blog.
Besides setting username for fetching feeds, you can setup caching and response time + number of posts to fetch.
If caching is turned on your feed will check every X minutes for updates and your blog will run fast without need to load data from remote server. If caching time is expired new version of feed will be downloaded to your server and used for later processing.
Also you can setup number of seconds to wait for response, and if you donít get response in that period of time local feed will be displayed automatically and your user want see downtime of remote server.