The end?!

as I see it this is what happens:

the agents scene ("all those days and weeks and months dreaming about conspiracy and now you're right in the middle of it thanks to us and to our kind benefactors and you really haven't a clue what's happening") morphs into Adam on his death bed. The agents, it appears, are actually his Doctors and in his coma, he has distorted everything around him. Thus we see flashbacks showing us that Adam has actually just had a fit, been taken to hospital by two paramedics, checked on by a doctor in the hospital, has been visited by a policewoman in hospital (to tell him of his mother's death, even though he's in a coma), has been visited by his work colleague (hence the flowers) etc... i.e. he's been in a coma for most of the film, and the film is the distorted dream world that he inhabits (see for example Jacob's Ladder). On the wall is a poster of the Golden Gate bridge - San Francisco.

Yeah, so basically, at the end of the film, we witness the last flashes through his brain. And then he dies. But, it's not just one of those, 'it was all a dream' films, because, as the Doctor informs us, he has actually been on experimental drugs from the company Pfenal. In other words, it's not just a dream, the poor bugger has actually been on some kind of experimental medication and it's all gone wrong, and even in death the Doctor says "don't take this one to the morgue just yet, Pfenal will need to do a post mortem, maybe this time they'll find out what's gone wrong."

The nurse who then closes the dead Adam's eyes (the last thing he'll see?) is actually CyberBunnyLily, his girlfriend. She was real, but not a thing in his head, but his nurse! (see the really stunning Ivans XTC for a similar reference).

And the last scene, the kite on the beach, I think that's a dream scene too. Some kind of metaphor for dying thing.

Hey, that's just my guess, but this makes kind of sense to me.