I don't type most people - only people who interest me or who are constantly in my face. So, statistically I must know tons of SPs and SJs, and I presume they're the myriads of drones I pass in the street and ignore in the office. Man, I'm a jerk.
ENTP: I only know one, and I want to eat him. He fascinates the crap out of me. It's like we're on the same radio frequency, but tuned in from parallel universes. We both love talking about "what if" theoretical situations, (which makes the SPs and particularly the SJs around us groan), but it seems like we're always baffled by each other - we think we're talking about the same thing, but after a while it becomes evident that we're not. It pretty much just makes it obvious that we have two entirely different ways of approaching the same issue, or entirely different sets of values. He seems to interpret things from a path-of-least-resistance,social harmony, happy-joy-joy perspective, and I see it from a universal-principle, for the overall good, teetering-on-the-brink-of-destruction perspective. I get the feeling he doesn't always like my morbidity, satire, skepticism, and distrust of others. It always makes him go quiet and serious-looking, and makes me feel like I committed a faux-pas and am a major drag, which I probably am. He's SO energetic and driven, although he hops from one interest to another, becoming expert at one in an incredibly short period of time, and then ditching it for the next. He has no end of confidence - and I wouldn't tell him this, because he would sulk, I know, but although he's brilliant at a lot of things, he's not that good at a few of the things he thinks he's especially gifted at. He back-door brags a lot, which just makes me roll my eyes. I think it's kind of cute in him - in anyone else, it would seem really pretentious. He always seems to feel the need to relay to me all the compliments he received from the time I last saw him. People loving and adoring him, and being awestruck at his talents, seems to be what makes him happiest - he really seems to need other people to like him. I remember he actually encountered one or two people who weren't instantly charmed by his charisma, and he seemed confused and a little angry, and eventually "didn't like" them - he never "hates." And on the flip side, he seems to be coming to a very slow realization that if he talks to all people as if he's absolutely thrilled to see them and loves them all, he shouldn't be surprised if they latch on like leeches to drain some of his enthusiasm for themselves.
So, in short - ENTPs (the one I know), fascinate me, but I can't read them at all, which is frustrating. It's a love-hate relationship, but love greatly overshadows the hate.
ENFP: I've known two, that I'm aware of. One was too sappy and pissed me off. He asked too many personal questions on what I would call bare acquaintanceship, and then tried to psychoanalyze my "closed-off" reactions. He would be hypocritical by telling me that I was heartless because I didn't have sympathy for tax-dollar-sucking boozers and didn't try to see where they were coming from - but he didn't try to see where I was coming from.
On the other hand, the other ENFP I know is charming and happy and seems to understand everyone. He's different from the ENTP in that he has extreme love or hate for everything under the sun, and doesn't find it necessary to pretend he loves everyone. His enthusiasm is adorable but not based on reality. I think this is more the typical ENFP - the other one (above) is probably a fluke. Overall, I love ENFPs.
INFP: So the starry-eyed romantic, star-crossed lovers, star-gazing type - pretty much anything with stars in it. They like to hang florescent stars in their rooms and name animals after galaxies. They see through stars and it blinds them to reality. They're very understanding and will humbly accept reproof or suggestions if they're presented kindly, but will get very angry and defensive if they feel their character is in question. Their feelings are hurt really easily. I like them.
INTJ: harsh, dude. Misunderstood loners.
INTP: I've only known one, and the type was never confirmed absolutely, but I'm pretty sure she was an INTP. We thought alike on almost all subjects, seemed to be on the same wavelength (originating from the same universe), but she was more laid-back, lazy, easy-going, che sara in her attitude. She wasn't as driven to succeed as INTJs. What struck me as most different from the INTJ, and therefore most interesting, was her SERENE calmness. Lots of people say INTJs appear calm, but her calmness was in a different vein - a happier, less determined calmness. We discussed ideas and solved logic puzzles to the wee hours of the morning, to the dismay of those around us. We were the only ones (other than her sister, who must have been an NF or NT of some kind) who could play cards or scrabble for hours on end without getting bored and impatient, because we could discuss ideas at the same time - two puzzles at once, what could be better? And we were also equally unemotional and didn't care if we were boring everyone else.
ISTJ: The type that most gets under my skin. They're so traditional, so unable to consider the possibility that something doesn't have to be done a certain way just because it always has been. To them, tradition is reason in itself, which I find infuriating. They also like to tell others what to do. No matter their age, they talk to you as if you're a misbehaving and silly child. They present so many unnecessary obstacles to achieving any goal, trying to smash it into the ground before it's even been considered. They always seem grim and rarely smile. They giggle at what they consider "taboo" subjects and hush you. They're always scrutinizing your appearance and giggle at anything they consider unconventional in your dress, poke fun at it, but always want to try it on themselves in a pretend-mocking manner to cover their actual curiosity. They're the ones who are always plucking lint off your clothes and adjusting your hair when you don't want them to. They can be quite dense. They can't read anybody, at all. They want 2.4 children, a white picket fence, and a minivan. They make me ill. That said, I like their definiteness - not wishy-washy.
ISFJ: My best friend is this type. Infinitely different from ISTJs. Though they like order and are careful, when in a group, to behave in the agreed-upon socially-acceptable manner, making the obligatory, coma-inducing small-talk, I find them more real than ISTJs. They're very accepting of people and eager to help them out, and they don't force their opinions on others like ISTJs do. I find ISTJs do only as much as is necessary to be "proper" and dispel their duty, whereas ISFJs do things out of the goodness of their hearts. They'd make excellent nurses, because they're not bothered by other people's sickness or whatever. I consider this the good type of guardian (Keirsey guardian).
ISFP: Too touchy and self-pitying. Everything is about them.
SPs in general: lazy, but easy to get along with. Annoyingly hedonistic sometimes.
As for the others - I either haven't met/identified you, or I don't care enough to bother identifying you.