The Human layer is probably the best magazine I have ever read on the ipad.
The articles are focused, well written and knowledgable. The magazine is well designed, interactive and fits the medium without being weird. The subjects are varied and interesting.
I believe they say they specialise in the digital world but don't let that hold you back from subscribing, you will be interested. There's a huge amount in there for UX guys like me, writers, producers, editors, product managers, all of you.
And there are no adverts.