Call centers (IVR++) -- sales and support services accessed via 800 numbers, adding speech recognition to today's DTMF systems
Smart phones with displays
Access to email, appointments, news and travel services etc. while your are on the road (in-car systems)
Mobile devices too small for decent displays or keyboards, WCDMA palmtop organizers/pagers with low enough cost to be a must-have (like cell-phones)