I was never a big fan of his off-Taxi antics, but then again, Man on the Moon made it clear that I simply did not understand them. I'm not any more of a Kaufman fan than I've been, but Man on the Moon has left me with an incredible appreciation for his genius.
Jim Carrey's performance is chilling. His normal on-screen presence has often made it hard for me to see him as the characters he's played. This time, I forgot that I was watching an actor portraying Andy Kaufman. It was frighteningly good. The entire supporting cast was just as stellar.
Though interesting throughout, mostly because it explained so much that I never knew about events that were so highly publicized, Man on the Moon's amazing insight into the "why" behind the "what" of his antics completely left out the "why" behind the "what" of the person. I now know a lot about what he did, but I still know very little about who he was.
If the creators' intent was to let the world get to know Andy Kaufman the man, then I think the film missed its mark. However, that has nothing to do with the fact that it was an outstanding film in every way. It would be as unfair to detract from the film for this as it would be to call a hammer useless because it doesn't drill holes. A film isn't about what I expect, it's about what it is. In this case, it's astounding from beginning to end.