An interactive television program guide system is provided. An interactive television program guide implemented on user television equipment obtains program guide data from two data delivery mechanisms. Current program guide data is obtained from a continuous data stream. Other program guide data (which may include the current program guide data) is obtained by the program guide from a program guide server.The continuous data stream may also include program and program grouping identifiers. The program guide may perform real-time actions associated with programs identified in the continuous data stream.