Watching it live in UK so spoilers if you're in the US/Commonwealth
1. Doesn't everyone look great in their period clothes? Graham rather reminds me of Butch Cassidy in that famous picture.
2. Goran Visnjic very good as Tesla, always liked him on ER, when I first saw the trailers I thought it was Mathew Morrison from Glee.
3. Orb of Theslaw? Very Buffy, useful for restoring a vampire's soul
4. The bugs are very Empress of Racnoss, even down to having a queen.
5. Nice depiction of Victorian NY, as the Dr said, an age of huge progress and utter deprivation.
6. I like the Graham/Edison interplay, nice that they don't portray Edison as the villain, Tesla is the idea man but impractical whilst he is the more pragmatic developer. He sort of reminds me Dan O'Herily from Robocop/Halloween 3.
7. Storyline rather reminds me of an old ep of ST;TNG where Geordie is kidnapped by a bunch of stupid aliens to fix their ship.
8. Wow, a gun actually comes in useful on Dr Who?
9. The last act of Zulu scene was actually a little bit of a letdown.
10. Not destroying the ship?
11. You know I would love a purely historical story for once with no spooky ooky, haven't had one since Black Orchid.
12. Much like Noor Khan in the 2nd ep, unfortunately the real Tesla had a sad end as the Dr observes, might have been nice to take him forward in time so he could see his legacy.
Judoon? Mmmm, not a fan.