Create some simple and realistic wires using photoshop.
Create a torn and burnt paper look.
Here is another way to work with color masks in Photoshop, using the quick mask tool, that you may enjoy using more than any other method.
There are several ways to mask out colors in Photoshop. This is one way to do it.
This tutorial will describe how to create that 'engraved' text look in Photoshop.
Create some good looking 3d text with this simple tutorial.
This can be a pretty neat effect when used correctly. It comes out kinda reminding me of a Blair Witch type style logo.