Existentialism: a philosophical theory or approach which emphasises the existence of the individual person as a free and responsible agent determining their own development through acts of the will.
A good existential comedy can make you think and change your own life while also laughing, give good morals or perhaps provide insight in a particular scenario you've never even thought about, these are some of the best existential comedies. (Based on commercial and critical success plus my own personal opinion, in no particular order), enjoy.