I'm sure it's been said many times, but John Cleese did provide a memorable talk on it [1] and particularly touched on the relation to stress. And if anyone feels like they have troubles with stress/anxiety, Robert Sapolsky provides some great insight into how and why it affects health overall [2]. I'm not sure if Sapolsky's material will help reduce stress, but it was pretty entertaining along the way.
Two great speeches that it would be a shame to lose. Now, what was that about keeping up with digital clutter?