Potential culprits include WoW.
It can be hard to quickly mute or otherwise change your media while it's playing, but Media Player Hotkeys makes it simple to set up keyboard commands that work with different players.
Force-quitting an application can be done directly with one keystroke, if needed.
There are several options for taking remote screenshots and specifying what to take a remote screenshot of in OS X.
The Dock and some of its features and functions can be accessed in non-standard ways which are sometimes more convenient.
If your mouse cursor disappears or freezes but the system is still responsive, then you can likely remedy the situation without hard-resetting your Mac.
If you continually need to restore specific browser tabs, then Apple's Safari may come up a bit short.
Microsoft plans to include the widely used e-mail program in the tablet-specific version of Windows when it updates the operating system later this year.
Apple offers graphical window management options such as Expose and Mission Control, but keyboard shortcuts can sometimes be quicker.
Fans of messaging phones will appreciate that the reasonably-priced Optimus F3Q carries out the basics without breaking a sweat. Its unfortunately scant on-board storage is not a deal-breaker.