I don't watch The Office, but I just read the wikipedia article on Michael Scott. He's definitely ExFx. Mostly he floats between any extroverted and feeling type. He seems to show a slight preference for immature Fe (over reliance on standardized symbols of caring, wanting to connect with others in a meaningful way but not knowing how, moralizing) although immature Fi shows up frequently.
Fe is a poorly understood function on the forum because all people see is a set of instructions on manners and etiquette. Like I said he seems to want to connect to people (Fe) but just because you're an FJ (or TP) doesn't mean you use your Fe well. It's just how your feeling comes out. What's confusing about Michael Scott's character is you can't tell if he's more comfortable using Fe but his poor command of it makes it look like Fi or if he prefers Fi and is horrible at Fe. I don't believe that just because we have a preference for a function it's used skillfully.
Also, do you see any evidence for what his thinking preference is? When I interact with FPs there Te contrasts sharply with my Ti. It just seems obvious when I go into analyze mode and they go into categorize mode. I also think it's worth bringing up how certain function combinations look like others. BW and "?" have mentioned this and Linda Berens elaborated this in one of her books.
It helps to begin narrowing if he's a dominant feeler (EFJ) or auxiliary feeler (EFP). EFJs are more connected to their values and EFPs are more connected with their perceptions.
The way he's described in the wikipedia article makes it look like he's a dominant feeler:
-Michael places his personal interests as a priority over work (such as his birthday, someone else's birthday, or a funeral for a deceased bird)
-he often places those responsibilities secondary to his desire to be friends with his employees.
-He keeps several joke books in his desk for reference (would a dominant perceiver do that or would they rather wing it?)
-One of the more frequent things Michael does is host seminars that range from diversity, sexual harassment, the handicapped, public speaking, drugs, homosexuality, grief counseling, prison, religion, and women's appreciation in an attempt to educate his staff (he's not afraid to address the Big Five!)
It makes sense to me that he's most likely either ENFJ or ESFP I just can't really explain why. I don't see much Ne, just Fe, Fi, Se, and Ni.