Mother Effing Text-shadow
mothereffingtextshadow.com
mothereffingtextshadow.com
Interesting nonetheless, though.
One trick I use for circle-style gradient backgrounds is to have three sides of your gradient all end in the same color (you can use an inner shadow atop your gradient in PS for this) and then to pin the image to top/bottom/center with CSS attachment and positioning. Finally, set the page's background color to the same color as the end of your gradient.
http://www.youtube.com/watch?v=OQSNhk5ICTI#t=0m7s
in case you didn't know.