title: iPhone SDK: Setting up an animation to create a blinking effect
body: <p>In an iPhone application I'm developing I have a Image View that displays eyes and I want to make them blink, an obviously blinking is a random thing, it can't be routine and keep repeating like a UIImageView Animation would do on repeat. </p>
  
  <p>How would I set up an animation that displays one frame (blinked eyes) then sets back to the original image and does this in random intervals?  </p>
  
  <p>Remember when answering I'm a newbie.</p>