Another developer used jQuery Uniform in a project I am building, and it has really made me a much happier person. Uniform styles "hard-to-reach" elements: Selects, Radios, Checkboxes, and File Upload Inputs, the latter being what I am most happy about. If you have every tried to style these, you will know that it is not an easy undertaking and requires blowing away the element visually and replacing it with images. Uniform does all of this for you AND gives you the .psd files to easily create your own theme. Enjoy saving lots of time and impressing your co-workers.

Lots of thanks goes to the source: uniformjs.com