Why no Wire?
This is down to the thorny issue of Rights. Much of our programming is made or commissioned by the BBC giving us the "primary rights", including the right to make it available on iPlayer and all its various platforms (PC, TV, mobile, games devices). However, in some cases, the BBC will buy in material, where the primary rights may be held by big international commercial organisations - in this case, it's the cable broadcaster HBO. Of course, TV is expensive to make and these companies want to maximise the return on the investment they've made in producing their shows.
As well as that, bear in mind that iPlayer isn't the only TV catch-up show in town, the big studios can also sell their material via DVD or one of a growing number of pay-per-download sites. So, in this case, while we could have BBC2 terrestrial (or "over-the-air") TV rights, on-demand rights may not always form part of the deal.
It's a complex area and there's no "one-size fits all" solution. There is a growing portfolio of Hollywood films on iPlayer but generally they're only available for PC streaming rather than download. Similarly, Heroes is available on the PC but not on mobile or TV iPlayer.
But I think it's important to note that the vast majority of the content that the BBC broadcasts is cleared for catch-up. That's down to years of hard work from the BBC Rights department. Without them, we wouldn't have an iPlayer.
Jonathan Murphy is Senior Editorial Development Manager for iPlayer.