Hi,
This is just a small collections of hooks, scripts, and practices I developed while working on a not-distributed/corporate project.
A quick list is: svn-like revision numbers (via tagging every commit) (don't flame me, please), combined diff-enabled commit emails*, Hudson hooks, trac hooks, branch locking, same-repo-separate-DAG git server-side config storage and export-on-push, and developer-side push/pull scripts that "just work".
http://github.com/stephenh/gc
Hopefully others find it as useful.
Thanks, Stephen