Applications :: What Cool Little OS X Apps Do You Use?

I was just curious what little applications people are using to mac OS X that much cooler. Here's what i'm using...

I use Menu Meter. It puts a little upload/download meter in the menu bar so I can see what's going on with my network. It also has the ability to display cpu and ram usage, but I don't use those.

It's also use Delocalizer it goes through ever application and removes all of the foreign language documentation associated with them. Unless you are incredibly interested in learning how to use iTunes in Mandarin Chinese, I promise that there is about 200+ mb of space you can free up. (Ignore the website's warning, i've used it on 10.3 and it worked fine)

Finally I use Synergy for it's iTunes capabilities.