59 for me as of now.
Was in a contest with a couple friends to see who could get to 50 countries, 50 US states, 6 continents and 2 unique countries first. A unique country was anywhere neither of the other two friends had visited. So if I visited Turkmenistan, giving me a unique country, they could quash it as a unique country by visiting it themselves.
Had a lot of fun, but I lost on the US states.
It didn't help that one friend quit his job, and took a year on a RTW ticket picking up countries.
Now we are back at it, on the way to 100. Going to take a while on that one, as you tend to visit the first 50 again while transiting to the next 50.