There was a Watchmen-themed light show on the Thames, featuring projected images of Dr. Manhattan and the Comedian's logo. Here's video:
And over at Slate, Ashley Quigg and Dan Kois teamed up to post six different parodies of Watchmen, including Watchmen by Woody Allen, Judd Apatow, and as the Super Friends:
Ashley also draws a great Alien. Via.
*Previously: Video of a holographic sea monster.
*Buy Watchmen toys at the Big Bad Toy Store and Tenacious Toys, and buy Watchmen posters at eBay.