A) I do generally. I've discovered I'm far more tolerant and willing to overlook people's past mistakes than the vast majority of my peers. That being said, if you betray or serious hurt me, I'll eventually forgive you but I won't forget. I know ISFJ's are known for holding grudges and I'm sad to say that's true for me. Some of the relationships that I have with people today have been shaped by past misdeeds they committed against me years ago
B) Annoying mostly, not because they're not worth having but because rarely do I see anything productive come from them, which is why I generally stay away from them.
C) Conservative, yes, mainstream, no. All of the pundits and everyone of those clowns on Fox News can take a flying leap and a rolling doughnut for all I care.
D) It depends, usually I try to be very tolerant and nice and it's worked out well for me. I know a lot of guys with really debilitating social or mental disorders for which I'm good friends with. One of my buddies at work actually is a guy who is slightly retard (in the clinical sense) that many of the other workers make fun because of his child-like nature of but for whom I've known for ever and get along with great. I've found that some of these people, while they may not possess the best social graces, are some of the most loyal and steadfast friends you could ever ask for.
All that being said, I also know a few weirdos that are really annoying or disgusting and I generally try to avoid them. I had to get really hostile with one because he was making one of my lady friends really uncomfortable with his behavior.
E) My definition of that would be someone who can look at a problem or situation and resolve it in a way that's not only completely different than what's been done before, but that resolves quicker and easier than before.
F) Certainly, if it was on a topic that interested them. Anyone who's read more than a few of my posts could tell you that I get long winded when it's about something I feel strongly about
As for topics, I would expect topics that revolve around issues that affect individuals personally but it doesn't have to be (FDG's example stands out as one I wouldn't expect but, hey, that's just me)
G) NT's in general are the types I have the most difficult time, not because I don't get along with them (I do) but because they're just on a completely different wave length than me. As for ENTP's....no, they don't seem like aliens to me. Often times I can understand their logic and the reasons why they go about doing things and many of them can pleasantly surprise them. We and they just have different priorities I suppose. Sorry if that wasn't quite what you were looking for.