Just wanted to announce that the latest version of my Stack Overflow Reputation extension for Google Chrome is available in Google's extension repository.
The extension now supports showing reputation from Stack Overflow, Super User, Server Fault and Meta (following requests from users). It also utilizes jQuery 1.4.1 for better performance.
To use it, you need Google Chrome version 4 (or Dev build 5), and a profile on one of the Stack Overflow sites (of course :)).
Get it by searching the extensions repository for 'Stack Overflow' or browsing directly to http://tinyurl.com/SOExtension.
Comments and requests are welcome.