Can someone please help me here. I've watched the show twice and its just unclear to me what Bracewell was planning to do at the end of the show. Amy and the Doc's conversation went totally over my head. What was he going to do in 15/30 mins?

Surely if he wanted to blow himself up, he could have taken himself off for Germany to do it!

Bracewell was trying to commit suicide - though I wouldn't be suprised if a bullet to his head had no effect on him
The 15/20/30 minute delay was that the Doctor and Amy didn't actually want to deactivate him, so were giving him a chance to escape - the joke being that Bracewell took ages to cotton on to that.

He was running off to live a normal human life, that is what The Doctor wanted him to do.

They were suggesting he ran away to live a human life and find the woman from his false memories etc.

He was Dalek tech but proved himself to be human by his actions. The Doctor should have deactivated him but chose to give him a chance.

Bracewell was under the imprestion that the dr and amy where there to decomistion (sp) him where as they just was there to tell him to go back to where his memory of home was and to life his life as if he was human.

they where trying to hint to him to do it hence the converstation about 10 / 15 / 30 minutes hinting he had time to run untill they just told him

Surely letting a potential bomb wander around in the second world war, is not a very sensible thing? What if a bomb lands on him, the result could be catastrophic.

They deactivated the bomb though, no?

The potential would still be inside him though? if he was blown up by a WWII bomb, then surely whatever is inside him would detonate?

She'll be in for a shock when she discovers he's an android!

If he's an android made to be a perfect functioning replica of a human, she would need never know. Aside from the fact that Bracewell logically wouldn't really age, and that false hand, I'd guess he's indistinguishable from a human being to everything except an x-ray.

Surely though she only exists in his false memories? he has never been to Paisley, he has never been in love, he was recently created by the Daleks to help them infiltrate the war effort so that the Doctor would appear.

One has to wonder where the Daleks got such technology to build a perfect human android.

They've had that technology for years. They created an android replica of the Doctor in The Chase (1965) and their whole plan in 'Resurrection of the Daleks' (1984) revolved around human duplicates.

Were they as perfect? with perfect memories of a full life before?

The ones in Resurrection were, yes. Which was partly why the Daleks lost when one of the duplicates-Stein-realised what he was and turned against them.

Basically, The Doctor would give everyone in the base the impression that he was going to deactivate Bracewell, giving him the chance to sneak off and live out his dreams. After all, it's not the Doctor's fault if he runs away

Very Doctor-ish

He wasn't actually a bomb as such, he had a worm hole in him that would have sucked the earth into another dimension, probably ripping it apart in the process.

Which makes me wonder if there is a link between Bracewell and the cybermen returning.

Also is the post office in Bracewells memories the same village post office mentioned in the eleventh hour? [forget that one i forgot it was in england]

Is Dorabella (in Bracewells memories) a distant relation to Amy? .... sorry I am out of control with speculation

Well moffat said this series could be a bit timey wimey!

The post office in The 11th Hour was in Leadworth, an English village. Bracewell's implanted memories belonged to someone from Paisley, Scotland.

Oh yeah of course and Leadworth was in england i forgot she moved.

Could Bracewell be the reason that 1990's tech is (apparently) ten years ahead of time, this might explain Amy's ignorance of the Daleks?

Good thought, but you still have the anachronism of a British Steel advert in the background in the 1940s when the company wasn't founded unbtil 1967. I think something has altered time, but I don't think it was Bracewell.

either that or its a error

An example error would be the map tables were'nt really used in the war rooms London they would have been used at RAF bases.

Possibly, but it seems unlikely to me-they'd have had to have actually created that piece of set dressing so someone would have checked on its authenticity, surely? The map tables weren't an error, it was a deliberate decision to have them there for effect despite the innacuracy, they discussed it on Doctor Who Confidential.

How about that shiny thing on his chest, a metallic body, and basically metallic everything

Inaccuracy then! Its still wrong!

If you watch it again, Bracewell actually looked human when the Doctor opened his shirt, until he caused his skin to open up with the Sonic and reveal the metal underneath. Presumably, he would have closed him up again when he was defused.