I just finished a tutorial on web design in photoshop using patterns as a key feature in the design. In this tutorial I created three patterns and used some photos from my personal library as content for a basic portfolio site.
Eric Hoffman, who wrote the tutorial, showed me a lot of things I did not know about photoshop, but more importantly about design. You can make your artwork more appealing by using various patterns, gradients, and most importantly, opaque brush strokes to give a lot of visual interest to your viewers.
Alright, enough with the text, I'm sure you're wanting to see what I did. Oh, and you can follow the same tutorial here.