SHAPES & SIZES
GoGoGoGoGoGo
GoGoGo
GoGoGo
GoGoGo
GoGoGo
BORDER & BORDERLESS BUTTONS
3D BUTTONS
Check out the new site!Visit Us! GoSay Hi!RAISED BUTTONS
Visit Us! GoSay Hi!Say Hi!LONG SHADOWS
GLOWING BUTTONS
GoGoGoGoGo
Dropdown Buttons
BUTTON GROUPS
STACKED BUTTONS
GoGoGoGoGoGoBUTTON WRAPPERS
FORM BUTTONS
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TYPOGRAPHIC STYLES
uppercaselowercasecapitalizesmall caps
Source: http://unicorn-ui.com/buttons/