At some point in Portal 2's development protagonist Chell was slated to marry a turret, Valve announced during a panel at PAX Prime.
As reported by GameInformer, Valve writer Erik Wolpaw explained that Chell was set to find a tribe of abandoned turrets ruled by the colossal Animal Turret King. It would marry off one of its turrets to Chell after she helped the civilization. The bride turret - which Valve had gone so far as to construct - would then follow Chell around in the same manner as Watson in Sherlock Holmes Nemesis, as made famous by the clip below.
Elsewhere in the panel, Wolpaw said his inspiration behind the song in the end credits of Portral was God Hand, which concluded with a spectacular musical number during its credits. I mention this only so I have an excuse to show this amazing video:
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