I'm only a lowly undergrad.
But from my impression of one of the flagshig professors at my uni, i was put off from picking his brain about the module he was lecturing on(devolopment economics). This one guy whose a fellow at Oxford is difficult to approach, he doesn't like arguing about his research(i don't blame him-he's got 30 years of Academia behind him)
But two other professors from my department i have had a chance to talk to are quite cool and open to discussion(one Greek and the other is Australian-they are accomplished in energy/labour economics).
However the lecturer of my macroeconomics class although a very knowledgable guy is very anti Labour Party(a rough equivalent to the Democrat party). And very pro conservative, but I guess professors are allowed to have their own beliefs too.
TBH i take my earlier post about this being scary back, like Bernie Mac said: "i don't believe shit, till shit happens".