Great looking 'web 2.0' (god I hate that term) rounded textboxes - fully adjustable to the length of your textbox using css 'sliding doors'
I saw some of these rounded textboxes somewhere (?) and I though they looked pretty good. Even though they don't really go with any of my sites, I wanted to know how they were done. I figured the easiest way to get them working without making a ton of images would be to use CSS sliding doors technique I picked up from http://alistapart.com/ a while back (awesome site!).
The finished product looks pretty good, uses strictly html and css (asp controls work great too) and really couldn't get much easier. It works for single-line textboxes as well as checkboxes. You could easily take the concept to a multiline textbox if you just added some larger images. The code is pretty self-explanatory, so I won't get into the details here. I included the .png files so you can customize the colors if you want - just drop in the code and go.