doctor who River Song is 600 years old!
Ok, In "A Good Man Goes to War" we find out that River is Amy and Rory's daughter, and that she is also part Timelord.
In a recent survey, I asked if all you whovians thought they should replace River in the next season, mainly cause I think she's old. Xleeloo said that at some point he can see them replacing River's Actress because "And since River is a Time lady, she may have to regenerate at some point..."
Honestly that thought never occured to me. I though that River had regenerated as a child but that was the only time. I never thought that the River we all know and love might only be the last River regeneration that ever exists. I never thought that we could have many River actresses to come. I mean Alex Kingston is 48, but who's to say that she's not portraying a 600 year old Timelord?