Last Hurrah..

What traditional elements come to mind when you think about getting married?  Engagement photos, announcements in the newspaper, deciding venues, ......a bachelor/bachelorette party?  These days, it seems to be a rare occurrence to not spend the night before the wedding engaging in levels of debauchery that range from "innocent fun with friends" to "let's never speak of this again."  I'll weigh in with my opinion in the comments, but I would love to hear from you guys.  Did you or your spouse have a bachelor/bachelorette party?  What did you do?  Where do you draw the line between having a good time and cancelling the wedding?  If you're not married, do you plan on having a "last hurrah?" Will you allow your spouse to?