Any good CSS UI Kits?

Do any of you guys know of any good CSS UI Kits. I'm in the process of designing/developing the back-end of my GPT script and can't find a nice UI Kit.

Thanks, tAG

designmodo(DOT)github(DOT)io/Flat-UI/ - amazing Flat UI
alexwolfe(DOT)github(DOT)io/Buttons/ - nice buttons
metroui(DOT)org(DOT)ua/ - Flat UI Components (PSD file)
www(DOT)angelostudio(DOT)net/newimg/touch50px-UI-Kit(DOT)psd(DOT)zip - ZIP file with Touch50px UI Kit
lukechesser(DOT)github(DOT)io/Popular-UIs/
manoz(DOT)dunked(DOT)com/minimal-ui-kit
www(DOT)icondeposit(DOT)com/design:58
designmodo(DOT)com/futurico-html/
dribbble(DOT)com/shots/421920-Grid-UI-Set-HTML-CSS
metroui(DOT)org(DOT)ua/
www(DOT)mightydeals(DOT)com/deal/aresio-web-ui-kit(DOT)html
ui8(DOT)net/wireframe-kit(DOT)html