In this paper, we propose a novel microwave oven called CastOven. CastOven is a microwave oven with a LCD display that enables people to enjoy videos while they are waiting for the completion of cooking. Current media contents force us to adjust our schedules to enjoy them. Media contents, especially movies, take specific time durations to watch them, but it is not easy to squeeze in time to do so in daily life. The system identifies the idle time in daily life and delivers an appropriate amount of media content to the user to enjoy during their idle time.