It's really easy to make, and believe, it looks really nice.
Tutorial is for Photoshop. CS4
1. Make new layer with any text.
Note : Text must be in one line, it's possible with multiple lines too, but it's harder.
2. Merge all the layers
3. Take Rectangular marquee tool and make a selection under the text.
Note : You should select only 2-3 pixels under the text.
4. Take Patch Tool and drag the selection down while holding left mouse button.
You can also add some lightning effects
Optional. Don't Deselect and go to Filters> Noise> Add noise and enter 1 in Amount.
"duplex" From original tutorial
Questions and Comments below.