Wulfram wrote...
The clearest bit of foreshadowing is the way Cassandra says "that warden, Anders", and Varric's response.
Oh gosh. While I was doing my first playthrough, I romanced Anders and accidentally spoiled myself on him blowing up the chantry. So when Varric said "don't remind me--I introduced them!" I sort of cringed and laughed. And then I did again when my character ended up running off with Anders in the end. It was even funnier since me and Varric were BFFs--I felt like he was lamenting that my Hawke ended up obsessed with her crazy boyfriend.

MCPOWill wrote...
Anders is such a brilliantly written
tragic figure. Whether he romanced or not, killed or given a second
chance, his dissent into madness truly is that of Shakespeare. Hell, I
just recently played through Awakening, and there is a ton of
foreshadowing towards both Anders and Justice that I think they had this
all planned from the beginning (of course 5 years of dev time for DAO, I
think it stands to reason they really had several stories that they
planned to tell in this wonderfully crafted world). With party banter of
Justice realizing the injustice that is shown towards mages and Anders
LACK of care for his mage brethren makes me wonder how much of Anders
even exists in DA2.
People like harp on Anders being poorly
written but they never went back and compared Justice and Anders and
their views in Awakening. Anders is just such a fascinating character. I
dare say he is the Hamlet of Video Game characters.
While I don't think I would say he's one of the best written characters EVER in Video Games, I definitely got a "classic Greek Tragedy" feel to him. Anders doesn't START from greatness, but by the end of the game he's a powerful mage and companion of the Champion--and if you romance him, he's even living in your mansion in Hightown. But his mistakes and flaws destroy the city he lives in and starts a war.
Actually, Hawke's story itself is even more like this. A refugee claws their way up from nothing to become a beloved hero and one of the most respected people in the town--and no matter what, your character will fall from grace, particularly if you take the mage's side. (It doesn't work as well on the Templar's side, though...)
..Oh, but Meredith is the most like that, isn't she? She starts in power, and her obsession destroys her town and kills her. Hmm.
Okay, now I'm rambling, sorry.