Might as well throw this in for free.

Believe it or not, the special "make friends with kerrek" and "buy kerrek a cold one" commands didn't show up in the game until after this Strong Bad e-mail.

Also, if you click on "good gravy" at the end, you get the King Of Town's Good Gravy. Also, clicking the word "crap" at the end also gives you the "All is on" song, which is a reference to Allison's name at the beginning of the e-mail.