Outlook 2011 Keyboard Shortcut for going to Inbox
I wrote a little AppleScript to do this. If you copy it to your "~/Library/Application Support/Microsoft/Office/Outlook Script Menu Items" folder you can assign a shortcut key to it using System Preferences/Keyboard.

Works like a charm.

The script is:

on run {}   
    tell application "Microsoft Outlook"    
        set selected folder to inbox
    end tell
end run