It looks like the Microsoft Cortana team is tweaking responses to some Halo-themed questions. Starting today, users began to notice that when asking Cortana about the famous first-person space adventure, she now responds with an image of the object in question in addition to her usual canned-audio response.
To initiate the results, users just have to ask Cortana 'What is Halo?' or 'Where is Master Chief'. Even asking about the Flood brings up an image of the baddie.
Full story from the WPCentral blog...