Why...
I think there is a big difference between real and imaginary/historic ENTJs.
If you don't know someone personally (like it is for imaginary or historic ones), you're going to have a very crude, black-and-white view. You see the stereotype. Actually, I was trying to find a "good" and a "bad" example of every type...
The "total ENTJ" *is* intimidating. I think that's his main flaw. But hey, the other types have their flaws too... (I'm trying to picture them in the cartoons, too. Until now, you've seen the killjoy ESTJ and a bit of the overbearing ENTJ. The page I'm working on now even features ENTJ asking for advice - and I can totally see him doing that.)
The strange thing is that people would hate ENTJs for being perfect and always right, calling them arrogant and intimidating. But this is a flaw, making them flawed and thus not perfect at all! I would have difficulties liking a perfect human, being flawed myself, but I guess I'm able to like the flawed ENTJ just as the others. (Well, maybe that's just me, but I like everyone until they prove they are not worth it.)
I'm not really sure, but I think my father-in-law is an ENTJ... enjoys school and church commitees, for crying out loud! And I love him

He's a real person though! He is my father-in-law and not any old ENTJ. Real people are always a mixture. Just take time to know them.