Well, add to the list of industry watchers who believe the post-PC era has begun. In a new report released Tuesday, Forrester analyst Sarah Rotman Epps says that computing devices--and how we interact with them--are currently undergoing a dramatic shift to:

· Ubiquitous computing: Mobile devices with sensors such as accelerometers, gyroscopes, and geolocators are freeing us from the stationary limitations of desktop PCs.

· "Casual" computing: Instant-on/always-on smartphones and tablets remove the formal boot up/shutdown process of the desktop.

· A more intimate experience: Tablets and smartphones are kept close to your body, whereas using a laptop or desktop is "arms-length activity," writes Epps in a . This means that consumers are using computing devices in intimate places, including the bedroom. Sounds like a boon to couples' therapists to me.

· Physical interaction with devices: Touchscreens, voice input, motion-sensing devices such as Microsoft Kinect, and cameras with facial recognition allow your "body and voice" to control the machine. By comparison, the desktop's mouse/keyboard interface is more abstract and less personal.