As far as your iPod video goes, (my opinion) is that it was in poor taste to promote your association with it. That was an unfortunate incident that should not be used for financial gain.
I'd like to examine iPod video for a second. We say it was unfortunate and that as professionals, this is not what we would want at any show. That is true - but there is a cost for that. I don't think any of us were there during the planning, pricing, etc of this show but I can almost guarantee you that this was not a high dollar wedding. Probably not even a medium dollar wedding. The DJ was not experienced, seasoned nor professional. I might consider this (based on all the knowledge I have of all the people in the trade) to be a new DJ performing for free to get his name out there. Maybe he's a family friend that they considered a 'DJ'. Maybe the bride and groom rented the equipment and had their friend, the iPod DJ, run the show because they did not want to pay for a professional level system, staffing and services. We can only guess what happened but the underlying fact remains unchanged, us professionals would NEVER perform like that. Our clients, our names, our businesses and our equipment are too valuable to us. This show very well could have been a victim of Rule #1 - You Get What You Pay For.
We have all had some bad shows and that's where the bulk of our experience comes from. We're here, on this forum, to help each other reach new heights in both shared knowledge and shared experiences.
As to the first video, there really is no call for that. Totally unprofessional, rude and disgusting. As a client, I would have stopped the show at that moment. As a guest, I would have left. Another example of what we don't ever want to see at a show. This 'DJ' seemed more experienced than the iPod DJ though so I'm sure there were probably fees involved. In fact, this video irritates me more than the iPod DJ does as this was someone that seemed to have a little more experience.