You can change the time increments shown in your Outlook calendar to allow for smaller more detailed calendar entries. This will work in Outlook 2003, Outlook 2007, and Outlook 2010.
In Outlook 2013, if you use the “Reading Pane” to get a better view of e-mails in your Inbox, you will see the “People Pane”. You can also find the “People Pane” at the bottom of an open e-mail. It contains information about the person who sent you the e-mail. This can easily be turned off so that you can reclaim that lost real estate in an email.