The Philosophical Bacteria.

Bob the Bacterium lives in a petri dish and spends his days pondering the meaning of microscopic existence. When he discovers he can communicate with his fellow microbes through chemical signals, he starts the universe's smallest philosophy club. Together, they debate whether they're truly alone in the vast expanse of the laboratory table, and if that strange giant eye that occasionally peers at them through the microscope might be trying to tell them something profound.