Comedy Central
As of 2012, Hannah Montana airs on no network anymore.
CBS
AMC
The show airs on both USA NETWORK and SLEUTH.
It currently airs on CBS.
FOX
CBS
Showtime
You can learn when the new season of a show will premier by visiting the website of the network it airs on. If you are not sure what network the show airs on, you can try checking out Wikipedia.
CBS
It airs on the G4 network.
Cartoon network airs Pokemon at various times during the week, and sometimes the weekends.