Corner plugin

JQuery has a lot of plugins, but I would like to tell you about one that impressed me with its elegance.

Corner is a plugin that allows you to set dozens of different designs for the corners of your div and all this without using images. In the gallery of the plugin you can see all the options:

www.malsup.com/jquery/corner

You can also download the plugin. The most important thing in the plugin is that it requires only one line of code from the programmer. For example:
')
$ ("# someDiv"). corner ("round 30px");

get a div with rounded edges with a radius of 30 px.

The size of the plugin is small, only 7 kb, which can be compressed to 3 using, for example, this JS-file wrapper
dean.edwards.name/packer

PS: it would be curious to know who else (and what) uses jQuery plugins for work?