“The very first appearance of the Master! (that is, unless the Master and the War Chief really are the same, which is complicated).”

“The parallel universe was fun, but the monsters were quite cheesy. Not that bad, but the weakest Third Doctor serial so far.”

“A pretty good serial. Seeing the United Kingdom with a space program that sends manned missions to Mars in the 1980s is both funny and sad, since we should have been there by then...”