>388 709's designation ("seven o' nine") is a slightly snarky
>nod to Jeri Ryan's character on Star Trek Voyager, Seven of
>Nine. (Why not "Seventh"? I've never understood that.)

Well, I'm certainly no expert on Voyager - by the time the series switched to the "all 7 of 9, all the time" format, I had already stopped watching it regularly - but the name always seemed to make sense to me. The way I see it, those aren't numbers in the "counting" sense, but identifiers that happen to be numeric. In that sense, "Seven" is her first name and "Nine" her family name. Depending on how those designators are handed out in Borg-land, she may or may not be the seventh drone to be added to the ninth cluster/matrix/borglet/whatever, just like "Room 7" in a building may or may not be the seventh room, depending on how the numbers were assigned.

>417 Minbari customarily sleep on inclined surfaces with their
>heads above their feet.

Head over heels, so to speak. ^_^
(Now, there's a saying that never made sense to me. Isn't "head over heels" preferable to the other way round?)

>In
>the Mad Headroom: 20 Minutes Into the Future TV series,

That's a rather beautiful typo. Would have made for a rather different series, though.