With all the hub-bub about Sherlock Holmes, and Batman rumors, I thought it would be fun to mention that Sherlock Holmes actually met Batman in the old Detective Comics series.
Apparently, Batman met a 135 year old Sherlock. You can read the page below, but here is the notable quote explaining why Sherlock was so old:
"A proper diet, a certain distillation of royal jelly developed in my beekeeping days, and the rarified atmosphere of Tibet, where I keep my primary residence,".
Also go to http://crossover.bureau42.com/zbatmanholmes.html (where I got the picture)