I say I don't generally like sci-fi, but then I love Star Wars, Star Trek, comic book movies, and Dr. Who.
My dad and I used to watch it around 1979-80, when I was little - I think Tom Baker was the Doctor then. Mr. RK and I recently started watching the BBC series - it's a bit addicting, as we're through season 3 now (they're currently broadcasting season 7.)
Some things I have learned:
1. No one is ever really dead - it doesn't matter if they are vaporized or memorialized. Trust me, they can come back.
2. Statues are almost always aliens hiding in statue form. Witness the weeping angels or the first time we meet the Daleks in season 1.
3. The Doctor is a bit of a polygamist. OK, not in the traditional sense - he may fall in love, but he's also constantly falling in like with pretty girls.
4. The ship is never really lost. Nearly 800 episodes from combined series prove this.
5. There's a lot of screaming and a lot of crying - think 1950s martian movies. I take it the creators have a dim view of human intelligent response to crises (or is that redundant?)
6. Aliens find humans incredibly stupid, and as a result, they are almost always hostile, considering us expendable. (Ninja edit - I had typed "expandable," but that was also correct, if you saw the episodes with the sleveen, who needed people to be...expandable.)
7. All alien leaders are narcissists.
8. Technology shouldn't be overused, or we'll all be in danger of becoming enslaved by aliens.
9. Anyone who's incredibly greedy becomes an alien slave. Lots of alien slave themes here...hopefully they don't go into alien sex slavery.
10. All of this alien invasion crap tends to happen in London. Wouldn't you move? :)
But I still want to know, where do they sleep on the ship? Where do they shower? Am I missing something?