Brian,
I have read all the replies, and here is an alternate solution which is not always feasable, but if it works within your format, it is a viable option: Simply cut back and forth between your subjects. In-other-words, start with subject A, then cut to subject B, then to C, then back to A, then back to C, etc. As long as you have continuity in the subject matter and the answers, this can work nicely while allowing you to eliminate the mistakes.