I hate syncing my iPhone with iTunes. just too long.
And i hate waiting to download podcasts.
There are a few i am listening every week, like this week in tech. But there was no real way to enjoy streaming them on the iPhone. iTunes on the iPhone allows you to do it but it is a painful process because there is no subscription and you need each time to go and search for your podcast
I recently discovered (via appsfire of course) Audiopress, a wonderful replacement for iTunes podcast. Super cool streaming, subscription, and experience.
There are also radio stations and audio articles.