Mind Game, Yojouhan Shinwa Taikei Recommendations
Both share a similar carpe diem message as well as the same comedic style, which is expected coming from the same director. Mind game just does it with a much wilder style of visuals where Tatami Galaxy is a little more elegant in comparison.
Wacky postmodern anime in which the timid guy wants to get the girl. Lots of surrealistic reflections on life and love. Both are directed by Yuasa Masaaki.
Both have the same director, same art style, and the same message.