I’m an INTP.
If you are not sure what your profile is, here is a generic site that give an overview: http://www.personalitypathways.com/type_inventory.html
Here’s another: http://www.personalitytype.com/quiz.html
INFJ here.
INFP, believe it or not.
I got an INFP on that test, but on this test I got a slightly extroverted score 
There is really nothing concrete about the types. They are just a generalized depiction of your orientation. There are of course shortcomings to the tests in which Jung himself admitted (and Jung probably would have disagreed with even having such an evaluation), but I think it does hold some value in regards to introspection.
Growing up, for example, I was more of an ESTP which is almost completely opposite of the INTP I am now.
Here is another site that should not be taken too seriously, but it points out the best suited careers for your type and even goes into relationships as well that may suite your personality:
http://www.personalitypage.com/
It is interesting, but don’t take it too seriously.
ISTP 
I’m an INTP. You should have made a poll for this.
Sorry, that last reply was mine, I forgot to sign in. 
INFP too
a poll would only reflect at most 17 choices which would include one unknown…
Yes friends, that was your local village idiot failing to log in…
Well there’s only 16 types. So whats wrong with a poll with a max of 17?
If you visit some of the websites posted initially, they have explanations that help you to decide what your “type” is.
INFJ
ENTP. I do want to be an actor, but it seems I dont really fit here…
ENFP
I want to be an actor or a flight attendant or a psychologist
In the above link, if you click on one of the personality types, it has links on that page, too, of the careers of that type, how to love them, how to parent them, and how to spot them. I found it very interesting.
First of all, Hi to all… 
Im a new member here…
I was actually very interested in type indicators a while back and I tried out the test more than a couple of times. Thats because I took tests at diff websites and it turned out that the ones with more questions (and not necesssarily intricate or deep questions) turned out to give a consistent opinion abt my type. Even then, there was some uncertainty and similarminds.com says that I’m an ENTJ while some other test I took says Im an INTJ. I guess the Extroversion/Introversion line is thin and so…
Anyway its interesting to see this topic come up. Anyone have any ideas about how we’re supposed to be interacting with each other now that we are whatever we are? In any case I believe we change these traits from time to time…
Well I’m an INTP, so if you really are an ENTJ that means we are supposed to be rather compatable with one another.
Aparently to find out who you are compatable with switch the first letter, and the last letter to the other choice, and keep the third letter the same. The second letter is semi-optional with the same being slightly better than different. So I’m also fairly compatable with ESTJ.
Yea, if your unsure, check out more than one site and do it more than once. http://similarminds.com is a good one.
The Big Five personality test is supposed to be more accurate than Myers-Briggs.