Is there a (graphical-UI) way to change a process/application priority?

<p>I am familiar with the nice and renice commands on the shell, but is there any graphical method (from the User Interface) to actually launch/run an application at a different priority level so to make it use more CPU than it would normally be allocated to it?<br /> Does the Completely Fair Scheduler introduced with kernel 2.6.23 makes this a moot point now?</p>