It is the small miracles of technology that I am the most thankful for. In particular I owe a lot to the red squiggly lines that indicate that I have misspelled something. I am the worst speller I have ever met. I chalk it up to a combination of a very non-linear, spatial cognition combined with a tendency to not care about details and a slight case of dyslexia.
But the red squiggles put me almost on par with spelling geniuses like Brian. Most days I feel like this little feature has probably the same impact on my life as electricity and the internet. (For the record, I had five squiggles in the above post)