I found the main Kaspersky interface to be very well designed. The main window is clean, easy to read, and attractive, complete with a big, clear status indicator at the top of the window. The scan tab not only shows a progress bar for a scan, but also an estimate of how long the scan should take--a feature surprisingly absent from a number of antivirus programs I looked at. The scan tab also includes a "hot spot": Drag a file you want to scan to the hot spot, and Kaspersky will scan it for you.