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I believe you are confusing actresses, Alex Kingston who portrays River Song does look similar to Tracey Ann Oberman who played Yvonne Hartman in "Army of Ghosts"/"Doomsday", where she was converted to a Cyberman. Im assuming this is the confusion ?

Sounds good to me I'm removing the del tag and rolling with it Alex Cross 17:54, June 11, 2011 (UTC)