The only Muslim culture(s) I know personally is Egypt and America (DC specifically). And the *overwhelming* majority of the people I know are very peaceful, have no hatred of the US or the West in general (in fact they love America), and really just want to mind their own business. So for them, I say live and let live.
As far and the Islamists, yes, there is definitely a need to reform whatever aspects of Islam are permitting these guys to gain power within their communities.
But I just don't want to punish millions of peaceful people for the horrible sins of a few.
BTW, since you are a student of Islamic issues, do you know anything about Hamid S. Aziz and his book "The Alternative Way?"
http://www.altway.freeuk.com/
Perhaps, but I do think we have some power in dealing with this problem through other-than-violent means. I believe in carrot and stick approach, not just the stick.