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.
By default, if you are reading an e-mail in your Inbox (or other folder), and you hit “Reply” or “Forward”, it will display in the “Reading Pane” instead of a new window. You have to click “Pop Out” to open in a new window. This can be changed so the “Replies” and “Forwards” open in their own window.