Doctor Who?

[tibilicus]

Is it just a certain hyper-rational mind, or is it a privilage reserved for DCI's

Spoiler Alert, click show to read: 

I'm kind of moving towards the theory that those who remember their lives before their "deaths" do so because they're not actually dead yet. Sam actually went back to the "real world" (supposedly) and Drake was in a coma, briefly waking before her actual death. Perhaps then they're given a chance to get back to their world if they're not actually dead yet. I don't really know though, it seems like a bit of a plot hole and that's the only thing I can think of to explain it, be it inadequately.

I can't really think of what other reason there could be seeming Drake and Sam weren't quite dead whilst Shaz, Chris and Ray were.