The call depth of Java exception stack traces never ceases to amaze me. These are easily 200 levels deep. I know I'm seeing things that trace back deep into the bowels of our application server, but I also remember working with much simpler Java programs in school that were still 50 levels deep or so.
I don't think anything I wrote in Perl ever had that many routines calling that many routines. Even if they had a comparable number of routines, they didn't go that deep.