Git TextMate Bundle and Browse Annotated Blame
I use the Git bundle like crazy. It's very fast and has a few features that make some of the more obscure Git commands readily available.
Recently, the feature "Browse Annotated File (blame)" feature just stopped working. This feature allows you to view the changes to a single file over the history of commits within TextMate
This is a critical part of my workflow, as I will often commit changes to the repo that are just thoughts, or tests that later need more polishing. Having the history readily available is huge.
I spent the better part of the morning in #textmate on IRC trying to debug it and found that updating my homebrew Git installation was the ticket.
If this happens to you, try updating your Git install. I was running 1.6.0.2. Updated to 1.6.5.3 and all is well now with the TextMate bundle.