As promised, Comcast CEO Brian Roberts treated Cable Show 2011 attendees to a quick demo of the company's latest and greatest tech earlier today. The presentation consisted of the new Xfinity TV platform with all its cloud processing and internet content from Facebook and others, as well as a speed test running on a Comcast cable modem that broke through the 1Gbps speed barrier on the production network. There's no word on when home users might see such speeds but the company promised to "keep up the pace as the internet continues to evolve" -- let's hope that extends to the increasingly restrictive 250GB bandwidth cap. The demo of new DVR software also went off without a hitch, appearing to run smoothly and showing off a vision of "cloud processing" that speeds up search, personalization and recommendations in the program guide by handling them at the head end instead of on the box itself. We're still waiting to get our hands on the RF remote and see if the experience is just as smooth ourselves, but for now you can get a taste in the 17 minute video embedded above.