[gavanwoolery]

For those who sometimes prefer straight GUI, you can just drag the folder into Sublime Text (or Textmate) and it will open it in the sidebar (probably obvious to some, but I did not know to do it until I saw somebody else do it).

Also, another thing I have grown really attached to:

Command-Option [1,2,3,4] to open up multiple views within one window, good for viewing several files at once.