1. The Panopticist writes about the media and makes occasional spoof magazine covers.
2. New from Amazon, SoundUnwound is a kind of imdb/wikipedia/filter hybrid for music. If, for example, you feel the entry for the wondrous Joy Lynn White is inadequate, you can edit it yourself. You can also get crappy recommendations, just like you can on The Filter and Amazon.
3. Using colr.org, you can create a colour scheme based on any image – or search for a stock image to match a colour scheme. Excellent for graphic design work.