Linux only: If you've ever wanted to change the default shortcut keys for an application to something that works better for you, the AutoKey utility for Linux can help, allowing you to remap any key you'd like.
Over at the How-To Geek site (my home away from Lifehacker), we've written up a guide to using AutoKey to customize just about any shortcut key in any application—for instance, if you wanted to use Alt+T instead of Ctrl+T to create a new tab in your browser, you can do so with a couple of easy steps. It's a very useful technique that can help you customize your Linux box exactly the way you'd like.
How to Customize Shortcut Keys for Any Linux Application [How-To Geek]