Multiple choice.

1999 is, apparently:

a) the suffix on my new screen name
b) my favorite Prince song.
c) the amount of calories in the "Absolutely Unkosher" bacon cheddar apple pie Emily and I entered (and lost) in Enid's Apple Pie contest.
d) the last time I have been to the dentist.
e) none of the above.

Edit: According to the dentist's records, the last time I have been there was 1999, but reflecting this is literally impossible.