A great design is usually a nonsensical blend of talent, inspiration and sleep deprivation. Here are some sites that I draw inspiration from:
http://styleboost.com/ -- Clean layout, collaborative/community focus & some of the most beautifully designed sites on the web.
http://logopond.com -- Very similar to styleboost, except the focus is on logos (and getting feedback on your work). Excellent place to find inspiration as well as a virtual 'sounding board.'
http://www.linkdup.com/ -- Concerted effort to seek out and present designs that push the envelope. Sites here are usually very progressive, and are often ahead of emerging trends.
http://thefwa.com/ -- Another really fantastic site that focuses on cutting edge work.
http://csszengarden.com/ -- Great concept for showcasing truly amazing CSS work, often in very aesthetically pleasing ways.

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