- a casual banana
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- Fabled Legendary Member
It's Ling Ling (well, more specifically, his head)!
Pic 1: They revealed that Ling Ling's head was frozen in Bungie Studios.
Pic 2: It's a head....
Pic 3: Observatory, looking, what have we been looking for for ages?
Ling Ling's head.
Pic 4 (the one that isn't in OP): All of them random Bungie characters and all of them had/were an easter egg. Ling Ling's head was an easter egg.
This leads me to believe that it is Ling Ling's head that we found so coveted.
[Edited on 04.02.2011 5:28 PM PDT]