There are shows with episodes that are filmed but take about a year before they actually air. Now, I don't exactly mind with most shows, but when it comes to iCarly, I go nuts! For example, I had heard about iMeet Fred, I was like, "Oh, episode with Fred. Not bad." I was very familiar with Fred by that time, so I was looking forward to it. However, as the months progressed, I became more and more preoccupied by the fact that it hadn't aired yet. I'd gone nuts by the time it aired.
Ok, to be quite honest, when I saw the episode, I decided that it was worth the wait, but production times drive me insane! They vary; sometimes it's a month before an episode airs, sometimes 2, sometimes 3...sometimes a year!
Still, I like to try to remind myself that sometimes the wait is worth it. But when it isnt... well, let's just say you don't want to be within 12 feet of me.
Update: You seriously did not want to be within 100 feet of me when iStart a Fanwar aired.