Not a home brew but super old. Its a Sam Adams Triple Bock from '97 I believe. Super old, looked like soy sauce... Friend who collects beer gave it too me. He always hooks me up with rare stuff or east coast beers I can't get.
I bought a case of Triple Bock in '97 with the idea of aging it and sampling one bottle a year. I thought I'd finished it around 2002, but then discovered a bottle on the back of a shelf in the brew shop in late 2009. Dark, thick, but considerable less sweet that it had been at the start, or even in 2002.
I wish Sam Adams would brew the stuff again.