Eridan made a reference to the Doctor Who enemy called the Weeping Angles when talking to Jade.
CA:my holy fire is the wwhite fury bled from the wwrath-wweary eyes of fifty thousand nonfictional angels
CA: and wwhen theyre finished wweepin they wwill boww before their prince
http://www.mspaintadventures.com/?s=6&p=005075
near the bottom of the log.