The plot problems that made me stop watching Alias.
What are the statistics on Hippo Attacks?
Things I need to pack for a trip we're taking in October.
Why are my knees touching? I don't want my knees to touch.
The plot of the book I'm reading.
That one scene in Eclipse that pisses me off. (I've actually lost multiple nights of sleep over this)
Strategy for playing Roller coaster Tycoon.
Remembering embarrassing things I said or did years ago.
Clever things I should have said in conversations past.
What keeps you awake at night aside from the normal things?