I noticed an interesting project on Planet Ubuntu yesterday--VCSFrenzy. This tool allows you to get desktop notifications of changes to version control systems (VCS). Sure, some VCS let you have hooks that email you whenever a commit occurs--but this tool provides a lightweight and simple method of keeping track of multiple vcs's. So I have started helping Pete work on this project. So far we have support for subversion and bazaar (additionally with mercurial in my branch right now). Stay tuned as this program gets some support for more VCS's and gets some cool new features.