Quick heads up on a super handy cheat sheet for Drupal

I'm working with Drupal a lot at work now, and in the process of creating my last post, I stumbled across this cheat sheet for developing with Drupal.

I had no idea could pull ddebug_backtrace() to get an instant stacktrace, or DARGS() to see the arguments being passing into a function at any point, or DD() to log directly to a text file (which you can tail in a terminal window to see stuff as it happens).

Now, if only Simpletest wasn't so depressingly slow...