Self-satisfied
Part of speech: adjective
Definition: satisfied with oneself; especially too satisfied; smug; slightly arrogant
Smug
Part of speech: adjective
Definition: Irritatingly pleased with oneself; self-satisfied.
Example sentence: There's always something at least a little smug about self-reference - magazine articles about idealistic journalists, TV shows about TV actors, ironic films within ironic-er films: all this meta-media populated by thinly disguised characters making oblique inside jokes.