Nico Nico Douga is going to stream 6 summer anime series for free. Each episode will be put up right after it airs in Japan and will be available for one week. There’s no mention of region restriction so it should be available worldwide, probably. The 6 streamed series are Strike Witches 2, Sekirei ~Pure Engagement~, Kuroshitsuji II, HIGHSCHOOL OF THE DEAD, Shukufuku no Campanella, and Sengoku Basara Second.
However, it goes without saying that everything will be only in Japanese, without any English subs. You either have to understand Japanese or settle only for the visual aspect of the video, or wait for a fansub release ^^