http://mdgdxj5d7wlgq3m6e4fvca5sgnbvejsyjh3sqh3p3tfngcnrhpuy3aid.onion/2013/aisaword.html
"A" is also the only word I know that's also a letter that needs another word to describe it that has itself in the writing: "An" followed by "a" . As in " an 'A' is a word". That's pretty awesome too.