Enter brighteyes as a code to unlock an option at the options menu to hear voice-acting bloopers.
Easy "Crowd Control" achievement
Never select Joey while in public. If you need to ask him a question, take the time to return to Rosa's apartment and ask him there. There will be some situations where you will talk to him outside of the apartment, but as long as you did not initiate the conversation by selecting him it is acceptable. The only exception is when you select Joey to talk to him, but you pretend you are not. "Crowd Control" will be earned after the game and credits are completed.
Getting the notebook
Go back to Rosa's apartment. Click on Joey and ask him about himself and then about his ghostly powers. Go back to Kelly's apartment. Right click on the bulletin bord and click on the photos to learn that Alexander's last name is "Davenport". Question Kelly to get the girls' first names. When in Kelly's room, use the phone to talk to Joey and ask him to use his powers. He knocks papers off Kelly's desk. While she is distracted, pick up the notebook. Speak to Joey about his powers to get the notebook.
Joey walks away
Talk to Alli about "Deacon and Ouija" repeatedly to make Joey walk further away.
Two Alexanders
After turning "Alexander" into "Alexander Davenport" you can get another "Alexander" by examining the doodle again.
Unlock the voice-acting bloopers
In the options menu, there is a special section with voice-acting bloopers. To unlock it, you have to enter the code brighteyes, a word Joey Malone uses to address Rosa. It is also given after finishing the game.
Wrong dialogue
After using the phone in Kelly's room, Kelly says something, but the wrong speech file plays.