Over on the Full Fat Things blog we just published the entity decorator module which we think significantly improves the developer experience for dealing with entities.
If like me you use MacGDBp to debug your Drupal code then since upgrading to Snow Leopard your variable inspector window will basically show unitialized for all variables.
I have found myself attempting to contribute to Drupal core more and more lately. So I wrote a shell script that gets me a fresh copy of head and applies a patch to it.