Extra Future[ Kyle Tezak is making mini icon sets for famous films][link], with the constraint of only using 4 icons for each. I’m fond of [the Life Aquatic][life] challenge, myself.
[link]: http://www.kyletezak.com/design/the-four-icon-challenge/ “The Four Icon Challenge”
[life]: http://dribbble.com/shots/107839-The-Life-Aquatic-with-Steve-Zissou “The Life Aquatic”
[Three Hundred and Twenty-four vector icons for user interface design][link] for a measly $29. Hell of a deal.
[link]: http://pictos.drewwilson.com/ “Pictos”
[Vector versions of every major social media site][link]. Useful and free.
[link]: http://icondock.com/free/vector-social-media-icons “Vector Social Media Icons”
[Always good to have some of these in your quiver][link]. None of them are really competition for the (still) king of web icons packs, [FamFamFam’s Silk icon set][silk], which is now over 3 years old.
[link]: http://webdesignledger.com/freebies/the-best-free-icon-sets-of-2009 “The Best Free Icon Sets of 2009 | Web Design Ledger”
[silk]: http://www.famfamfam.com/lab/icons/silk/ “FamFamFam lab: Silk icons”
[A kick-ass search engine for icons to use in web-based projects, apps, or other graphics][link]. This is great.
[link]: http://www.iconfinder.net/ “Iconfinder | Icon search made easy”
[Well-detailed and as beautiful as you’d expect from the Iconfactory][link].
[link]: http://iconfactory.com/startrek/ “The Iconfactory presents Star Trek”