In accordance with the various 'favorites' threads I've seen recently, thought I'd give this one a shot:

Examples of your favorite uses of color? I consider there to be two main types of responses:
1) unique/odd/bizzare but very cool uses of color(pinks, mega bright, ect.)
2) effective color schemes that are part of the design, appropriate for various uses

(I'm dealing with a client who wants "contemporary colors", but no idea what they really want when it comes down to it, so I'd love to see some nice uses of colors for inspiration, and just because I thought it would be a interesting to see your favorite colors schemes)

It may also be prudent to show example of bad use of color.