Willow Garage has updated their information on the Texai robots.
The RP2W Two Way Remote Presence Robot from SuperDroid Robots also looks like viable solution for office/factory telepresence.
TiLR seems interesting but unfortunately their website seems to have some issues.
Anybots QB seems pretty practical and maneuverable.
The main problem I see with all of these designs however is that they appear to lack the ability to go over curbs or handle stairs which signifigantly limits their usefulness. How can I send a robot out to get lunch if it gets stuck on curbs?