Multimedia in Church

I know that multimedia presentations during sermons are becoming increasingly popular, and I don't object to them on principle, but I'm beginning to wonder how much they contribute.

Today, for example, when I should have been listening to the sermon, I was admiring the graphics being projected on the screen. I wasn't, in fact, listening to the message at all.

I suspect this is similar to the problem publications and TV journalists face. Do the graphics and photos contribute to the story, or distract from it? In the case of magazines, you can be distracted, then go back and pick up where you left off. For TV journalism, often the picture is the news, so the viewer gets the main point by looking at the picture. But when the words are the message and you can't go back and pick up where you left off, as is the case with a sermon, then I become a bit more concerned.