There are some great industry standard datasets out there: Iris, the 20 newsgroups, anything from UCI, and the Yelp academic dataset come to mind. There are even some great non-traditional ML datasets and/or lists (we've probably tweeted them all out) that can be fun. But I have a special place in my heart for funny, random data that you don't stumble across everyday. It can be a little bit harder to find (I suppose this is sort ...