Beesu is a software like gksu or ktsuss.
Beesu (it sounds like "be su") works only in Fedora and Red Hat. It runs with consolehelper, so it'll look like a native software for Fedora!
It's good because you can run any software as root and you don't need to enter your root password each time, because while the session is active beesu can run any application as root without asking you to enter your root password.
The best way to understand beesu is installing it! just try!!!