Flesh and Stone
Idea Proposed but Not Used During the Alien Trilogy: Alien 3 originally involved warrior monks.
Central Premise Recycled From: Still Aliens, only with a deus ex machina added. Imagine if instead of the time-crack solving everything, River Song had got dressed up as a forklift and shouted "Stay away from her, bitches!" at the angels.
Reference to Moffat's Back Catalogue: The first Angels story it was "don't blink!" Now it's "Don't open your eyes!" So you're screwed either way.
Gratuitous Scottish Joke: Still none, no doubt overwhelmed by all the gratuitous "River Song and the Doctor have a future together!" stuff.
Amy Saves the Day with Wuv: Amy complicates the day with Wuv, more like. Weren't we promised a companion who *wasn*'t going to fancy the Doctor? Then again, we were also told that the Daleks were an iconic 1960s design which would never be tampered with...
Tennant Line: Still lots of gabbled-out technobabbly explanations.
Star Wars Bit: A central character spends half the episode effectively blind (para Han Solo in "Return of the Jedi").
Nostalgia UK: Back to cute little chocolate-box Leadworth. Plus a warrior monk named Crispin, as in The St Crispin's Day Speech from Henry V.
Teeth!: Still on the Angels.
Item Most Likely to Wind Up as a Toy: Here's an idea: how about glow-in-the-dark The Crack In The Universe (TM) stickers to paste on your bedroom wall? Not that this is likely to wind up as a toy, but if it does, Character Options owes me some royalties.
Something Gets Redesigned: The entire Davies era's been wiped, apparently. What that means, we're not sure...
The Crack in the Universe Is: Ooh, blink and you miss it...