ZURB : Super Awesome Buttons with CSS3 and RGBA

http://www.zurb.com/blog_uploads/0000/0617/buttons-03.html

CSS Text Button Design.

http://naradesign.net/wp/2008/10/31/203/

CSS Text Button Design With Icon

http://naradesign.net/open_content/reference/textButtonWithIcon/

CSS3 Gradient Buttons

http://webdesignerwall.com/tutorials/css3-gradient-buttons

Just some other awesome CSS3 buttons

http://www.red-team-design.com/just-another-awesome-css3-buttons

Button Maker

http://www.css-tricks.com/examples/ButtonMaker/

Icon Deposit CSS3 UI Kit (Source Code)

http://icondeposit.wdfiles.com/local--files/code%3Aicon-deposit-css3-ui-kit/index.html

CSS3 UI Kit (Source Code)

http://icondeposit.wdfiles.com/local--files/code%3A3/CSS3%20UI%20Kit%20Preview.html#

Fancy checkboxes and radio buttons with CSS
http://www.maratz.com/blog/archives/2006/06/11/fancy-checkboxes-and-radio-buttons/

CSS BUTTONS WITH PSEUDO-ELEMENTS

http://tympanus.net/codrops/2012/01/11/css-buttons-with-pseudo-elements/

CSS3 PICTOGRAM BUTTON

http://webstuffshare.com/demo/ButtonPictogram/index.html