Akiba Blog has posted photos of some of the Comic Market (Comiket) shopping frenzy that's happening in Akihabara. Comiket, one of the largest doujinshi events in the world, is happening in Japan. Though the actual event is held at the Tokyo Big Site in Odaiba, Comiket fever runs rampant in the street of Akihabara. Many of the more popular books are available for purchase at retailers such as Toranoana, Melon Books, and at K-Books. People can also buy and sell some of the limited goods they've picked up at Comiket in Akihabara. Shoppers typically end up having to wait in line outside the store to take the elevator up to the floors selling doujinshis as shown in the second picture timestamped 16:24. Locker spaces are also available for rent (17:05). Definitely an experience all anime fans should experience at least once.
Update: Akiba Blog has posted more photos for a different day.