Oldest Functioning, Living Human Body Part:
 

Bernt Aune's transplanted cornea has been in use for a record 123 years -- since before the Eiffel Tower was built.... Aune, an 80-year-old Norwegian and former ambulance driver, ... had a cornea transplanted into his right eye in 1958 from the body of an elderly man who was born in June 1885....

The oldest person who had documents to prove it was France's Jeanne Calment, who was 122 old when she died in 1997, according to the Guinness Book of Records....

http://www.reuters.com/article/lifestyleMolt/idUSTRE49M6BL20081023

Now that's odd news. Kind of cool, kind of freaky.

That's nothing.

You know how doctors some times say you have the xxx of a 50, 60, etc. year old.

Well my liver is 142 yrs old and counting...

I have it on good authority that the limiting factor for extreme old age is renal function, top end works out to 125 if you run the numbers.

that is a pretty old cornea