SBSettings

You can also disable and enable addons, find the file locations of specific apps, and hide apps on your homescreen. I mean, who actually uses the "Stocks" app? Hide it. Plus, SBSettings will make a minidock for you inside the popup if you want, which lets you run an app from anywhere, even inside another app.

There are tons of Winterboard themes that let you change how SBSettings looks, too. For example, the second screenshot.

I've been fiddling around with SBSettings for a while now, and as it turns out, it can do a LOT more than just give you quick access to settings. SBSettings can tell you how much memory is available in your iPhone's processor, free up extra memory, change your battery icon so that it measures by percentage (tap "more" on the SBSettings popup), and give you instant access to your IP address.

Seriously, get it.

I cannot believe how useful SBSettings is. You can turn off or even reboot your phone instantly, and check/close your phone's processes. That might not sound too inconvenient to do manually, but once you get used to SBSettings, it'll seem like a drag to switch back to the old way.