An exemplary computer-implemented media service system detects user input representative of a request by a user to flag a set of related media programs, monitors an availability of the media programs from a plurality of different presentation sources, determines when the user is likely to access each media program included in the set of related media programs, dynamically selects, based on the monitored availability of the media programs from the different presentation sources and on when the user is likely to access each media program included in the set of related media programs, a presentation source from the plurality of different presentation sources for each media program included in the set of related media programs, and provides the user with access to each media program included in the set of related media programs by way of a single user interface. Corresponding systems and methods are also described.