Coaster Trips
For several years now I've been putting the lions share of my holiday time into visiting amusement parks in various countries. Despite popular superstition this hobby is less unusual than one might imagine, with groups such as Theme Park Review arranging organised trips on a regular basis. It is true that the number of trips I do borders on the obsessive, but as long as it's still fun I don't see any reason to stop!
In deference to those who care about such things, I've been on a total of 1373 different roller coasters in 32 countries. The full record can be viewed here.