Hmm, ENFJ is one of the only types I have the slightest negative feelings towards, to be honest. They are basically slight though. I actually find ENFJs to be quite exhausting. Something about Fe and Ni just comes off as very irrational to me. I have defended ESFJs in the past because at least their Fe is tempered by Si, but being someone who has little tolerance for Ni, Fe Ni is like the worst combination. First you've got Fe, which is overly concerned with other peoples' opinions, then you have Ni which is potentially paranoid and irrational. So the ENFJs I know read too much into social interaction, and draw horrifying conclusions based off of basically nothing. Also, they tend to blame other people for their problems. My boss is an ENFJ and it is a rollercoaster working with her. She is less organized than me and that is saying something. She nags a lot, and she goes back and forth between very generous and accomodating (though she wants you to know she is doing you a favor), and stingy and spiteful (and wants you to know you brought it upon yourself).
My friend's mom is also an ENFJ and don't get me started. Very nice to your face and then does horrible things behind your back.
Anyway, I hate to say so many negative things about a type, but this is just one I've had problems with. I think it is just personal chemistry issues with that type though since most other responses here were fairly positive. I doubt ENFJs would have much nice to say about me either. XD I will say though, both of these ENFJs are very socially adept and charming when they want to be.