Running Gulp.js in the background (OS X)

I discovered (or really just stopped ignoring references to) Gulp.js today and decided to give it a go. Now, this is not a post about what Gulp.js is - I'm assuming if you are reading this, you already know. This is about how to make me actually use it. The problem I ran into with Gulp right away was when you run it in a project in the terminal (`gulp`) with a gulpscript.js that watches certain folders (css,js, etc.), it has to just keep running in a terminal window in order to keep "watching" these folders. Even if you run the command with NOHUP to allow it to run in the background and free up the terminal session, you still have to remember to start it up for each project you're working on.