My Favorite People

Say you could list your favorite ten types of people. Without really thinking about it too much, here are mine:
1. Girls who wear dresses on bikes
2. People on my bus
3. Civil War re-enactors
4. Smiling people who work at fast food restaurants or Safeway
5. People who can't remember any movies they've seen
6. Painters who aren't very good yet
7. Mousy nerdy people who like to party
8. People grateful to meet or see me
9. Christians wandering around places like Pakistan
10. Physicists even though I don't know any

How did she get my email?

I'm wracking my brain trying to figure out who Krystal Thacker is and why her subject header says: Bigger, Harder, Longer. The only thing I can think of is the girl at ACE Hardware who was helping me decide on the right set of drillbits.