1. "arguements", "discussions", "debates" -- whatever you wanna call 'em -- that begin with a dictionary definition.

2. chain-reaction problems (I can't fix this until I fix this until I fix this until I...)

3. my swiss cheese memory.

I can remember what I don't need at random times and never what I do need when I need it.

I can literally be in a discussion completely unaware that I know something and then, suddenly remember almost everything about it.

I can play a song through a krillion times and forget it on the krillion-and-first time through.