We think the CES floor is going be crowded next week, especially if you venture over by Sprint's booth. The carrier, in conjunction with Motorola and Samsung, will be demonstrating their next-generation WiMAX network in all its glory in beautiful Las Vegas. The demo will include a variety of their current MobiTV offerings, video conferencing, and VOD all via Sprint's 4G network . Now if we could only guess what handsets they plan to use, anyone?