A "Snowball" is a poem "in which each line is a single word, and each successive word is one letter longer." Nossidge built an automated Snowball generator that uses Markov Chains, pulling text from Project Gutenberg. It's written in C++, with code on GitHub. The results are rather beautiful poems (these ones are "mostly Dickens"):

o
we
all
have
heard
people
believe
anything

i
am
the
dawn
light
before
anybody
expected
something
disorderly

i
am
the
very
great
change

Snowball (also called a Chaterism) (via Waxy)