2.) Sheldonista A.R. informs me that there is actually a name for the eye-boogers that form during the night: "Haw". I don't have a suitably sized Oxford English Dictionary next to me, but the professors among us can perhaps look it up and give us the exact definition in the comments, below.

3.) Sheldon reader Andria S writes in with this:

I happen to teach Physics at a community college, and one of the most useful tools I teach is the Order of Magnitude calculation, also called a back of the envelope calculation. If you're unfamiliar with this, it's a way to get a rough estimate of any calculate-able quantity just by making some reasonable estimates to start. Regarding your eye crud strip on August 2, 2009, I made what I feel are reasonable estimates that a bit of eye crud is a small cube with sides of 1mm; that you either get crud every night of your life in only one eye, or else in both eyes but every other night of your life; and that you live 80 years. These estimates get you around 6 teaspoons (2 tablespoons) of crud in a human life time, and I could easily see getting 1 teaspoon instead with slightly different input guesses.

So Sheldon got it right - though on a test I'd dock him points for not showing his work. ;) .