I've noticed recently, that in some episodes of the original Star Trek, that there are some typewriters. In one episode, Miri, the Miri character presses a key or two on it. I think it was a Royal KMM or something similar. In the Assignment: Earth episode, there is another machine that I'm not sure what they used for it. In the episode, Gary Seven flipped a switch and it was seen to be typing by voice.
I've been trying to see the ones used in Hogan's Heroes, but haven't been able to do so yet.
In Doctor Who: Terror of the Zygons, Sarah Jane Smith uses a light green Remington of some sort to start typing an article. They show her typing her character's name and at least a few other words. In the more current episodes of DW, I have noticed what looks like an Olympia SM-3 directly attached to the TARDIS console. In the episode titled The Doctor and Vincent, I believe this typewriter actually has a picture coming out of it (from behind...)