Yes, two ways. But first - You should definitely join The Backlot or Yammer, because we can talk company stuff in a private forum...
If you're in a role with citrix remote desktops, you can download the iphone/ipad/ipod touch citrix app and access it at remoteapps.disney.com and use your LAN ID log in. Outlook will be one of the options.
Alternately, you can log into the hub (not every time, just once) and click "outlook from home" from the quicklinks. The first page that you arrive on that asks you to re-sign in, save that link to your favorites.
Last bit, if you're in a role that gives you the choice of an iPhone or Blackberry, if you choose the iPhone option, the nextel trailer will set you up with enterprise activation on your iPhone.