Firstly, I feel that variety is the spice of life and that while the office-based videos are cooler, I almost always want a better look at what's on the computer screens than can be achieved by waving a camera at it. So this format of video is good for that.
While I have you, some other suggestions and moans; please can you fix the site so I can login and comment without interrupting playback? And have you thought about a video queue and single player (with size options)? This would also prevent the volume resetting
each time. And if you could make it always on top and 50% transparent so I can keep working. And a new car and a slice of cake.