I work with MBS products (ops, Dynamics 
) every day (unfortunately not with CRM 3.0 for the moment) and I'm a big substainer of the needs to have mobile clients (and I'm observing that also customers ask for them more and more).
I'm sure that Microsoft in the future will help us to satisfy these needs and I'm happy to see the first signal on this direction: now there's an official link where to download Microsoft Dynamics CRM 3.0 Mobile, the mobile client for Microsoft Dynamics CRM 3.0.
Wonderful... you can now take your CRM data always with you, work with them offline and synchronize it with the CRM server when network is available. This is the future... 