The other day I had an interview for a possible educational consulting gig, and we got to talking about my side projects, including 2000 Dollar Wedding. I mentioned the Wedding Industrial Complex and how Matt and I set an arbitrarily low budget in an attempt to steer clear of the WIC entirely (and to save money for a down payment on a house and to retain all of the decision-making control and to help us stay focused on the non-material aspects of a wedding, etc.).
He immediately recognized the idea of the Wedding Industrial Complex from his own stint as a groom. He said he and his wife originally tried to go their own way and enact their own vision, but in the end, the whole thing got taken over by forces bigger than themselves. He commented that the professional photography was the biggest waste of money in his mind because his friends and family captured pictures that were way better than the photographer's.
Even for people who are choosing professional photography, I think it's still helpful to put systems in place for capturing the photos taken by friends and family.
Matt and I set up a Pro Flickr account for $25 and asked our friends to upload their photos to a centralized account. We included the information on our wedding website to give them the heads-up before the wedding, and then we sent out an e-mail message after the wedding reminding them of the username and password. This system worked pretty well for us, and we ended up with more than 2,000 photos from our friends and family (which was plenty!).
Intimate Weddings has an article about setting up a photo downloading station, so guests upload their photos from their SD cards to a centralized computer before they leave. It's very helpful!
Friends of mine who are getting married in April purchased a Polaroid PoGo printer, so their guests can connect their cell phones or their digital cameras and immediately print a sticker picture. They are using this for their guest book.
Any other ideas out there?