I actually find it a vastly superior format. You can rewind the bits you don't understand clearly, or when your mind wandered off. In a live lecture, you do not have that luxury. In order to get maximum value out of a live lecture, you need to pay 100% attention to everything as it is said, and 100% understand each thing as it is spoken. Two rather unrealistic expectations, especially when lectures are usually cumulative, building one topic on top of the understanding of another.

Questions are also probably better handled with an online (or offline) forum and office hours. At any rate, I was never overly convinced about the 'interactive' benefits of the lecture hall.

why not? There a much better uses of class time -- students asking questions or more engaging interactive activities. Just doing practice problems in class, where the professor is there to help, is a better use of class time than lecture.