this will show you how to make Itunes smart playlists for podcasts and music so you can have every episode of certain podcasts, and the latest episodes of the others. Its also good for music – eg songs you have never played, songs you havent played in the last 6 months, etc.

• open itunes
• make a new playlist folder (i called mine iphone)
• make a new smart playlist inside the folder you just made
• select media kind
• select podcast
• hit the +

now you have lots of options. if your podcaster fills out the artist info the same for each episode, then use that, eg