The power of the Internet compelled someone to release the first gameplay footage of Obsidian's cancelled Aliens RPG on Youtube, which was promptly pulled "due to a copyright claim by SEGA of America". Sega's ninja lawyers proved to have limited reach, however, as the 1 minute 45 second video can still be found here and here. Stay tuned for the leaked tech demo that should be hitting the web about four years from now.

Thanks to VD and Begriffenfeldt for the links