Exemplary embodiments of the present invention provide methods and systems
for communicating and processing data in communication networks, e.g.,
cable networks and/or interactive television networks. Selective use of
different data streams and encoding techniques enable sophisticated user
interfaces to be generated on client devices having varying processing
capabilities. MPEG encoding techniques have reduced complexity to enable
better response time to user requests. Specialized user interface
features, such as hoverzooming, are enabled.