In one of many possible implementations, a system includes a content delivery subsystem providing online resource data and programming data associated with media content. The system further includes a content processing subsystem configured to communicate with the content delivery subsystem via a network. The content processing subsystem is configured to receive the programming data and to generate a program guide user interface including at least a subset of the programming data. The content processing subsystem is configured to access and utilize the online resource data on demand to generate the program guide user interface when the online resource data is accessible via the network. In certain implementations, the content processing subsystem includes offline resource data and is configured to utilize the offline resource data to generate the program guide user interface when the online resource data is inaccessible via the network.