Thanks for linking to that site, it's really good! Apparently my rarest achievement is for completing a level on Undead difficulty on Dead Nation which is odd as the one for finishing the whole campaign on Morbid was a hell of a lot more difficult. My most common trophy is the one you get for loading up Sly HD which apparently 100.10% of people have done.
Something I had worked out but this confirms is my 1000th Trophy was one called 'Like a Boss' which I thought was quite funny. My 1500th was one called 'Exact Change' which is almost good.
I don't suppose there is anything like this for the 360 is there?
XBL/ PSN/ Steam/ NNID - MatMan562