For those of us who can customize their docks, how do you choose what goes there? Most people seem to have the phone app, some have the browser, etc. I just thought about mine and it seems completely arbitrary. I can't say the apps there are the ones I use most often (i don't talk on the phone much), but it would seem weird for a phone not to have the phone app there. I happen to have one homescreen so anything there is easily accessible (no real need for a dock). Just curious about how others decide.