Asana
Asana was the first program I ever used that made me feel old.  But not in the actually rather good sense of it making me say "wow, they can do this now?"Rather, it made me feel like an old fart using a computer for the first time, bewildered more often than not, most of my instincts rendered useless.There are many examples in Asana of this. Each, taken alone, is banal: kind of annoying, but maybe not too bad. Taken together, though, we have something that a nicer person than I wouldn't wish on his worst enemy, but I'm just not that nice of a person.