[Amazingly useful list of links](http://www.zeldman.com/2010/08/13/how-to-use-textmate/) on how to use Textmate properly, courtesy of Zeldman.
For example, did you know you can write a blog post in Textmate, drag-and-drop an image into the textmate window and it will automatically upload and insert the image into your blog post? I didn’t. Mind = blown.