I can get really intensely focused on things like: Reading. Watching DVDS/TV. Being on my laptop. Even my thoughts or writing poetry.

When I'm this focused, I mostly can hear what people are saying, but its not really registering in my brain. I lose track of how long I've been doing something for, often and although most times I can respond when someone asks me something, sometimes, I just can't seem to hear them. My family calls this, selective hearing but it really isn't.