Favrd is a web app that lists interesting things that show up on Twitter, based on the number of times an item has been declared a 'favorite. Here's the raison d'etre:

It works on three principles: first, that anyone who wants to can have their vote counted; second, that things people find interesting are more important than people who find things interesting; and third, that by any means necessary, web-strategy, social-media, online-marketing webcocks – unaware as they are of how toxic their presence is in the arenas they cannot shut up about – must and shall be filtered out of view.

Little Chimp Society is a weblog that showcases great illustration.

Logoblink has compiled logos from U.S. political campaigns for presidential election from 1960 to 2008.

Adtunes is a portal for finding music from TV commercials, film trailers, TV show and film soundtracks, and video games. I've used the forums on this site several times to track down the creators of music in TV commercials.

For a limited time, you can get a free PDF copy of SitePoint's Photoshop primer, The Photoshop Anthology. Requires that you submit your email address for download link.