As mentioned I was at GWAVACon last week where I delivered a few sessions. As always when you visit an event like this you're trying to prepare yourselves as much as possible. Unfortunately with all preparations, still sometimes things might go wrong, a beamer that can't run the resolution you would like to use for your demo or a demo that doesn't want to run like you've don this in the 10 times you ran it while preparing.
Like many others, I use VMware quit frequent while doing demos, with the snapshot feature it's easy to get back to the stage where you want to start your demo and you can be sure you've got the same setup every time you restart your VM's. Another benefit of VMware images is that they are easy to copy so I normally always copy my VM's to a DVD or another hard-drive (I've got two hard-drives so I can swap the primary disk in my laptop). I had it once where 5 minutes before I needed to do a demo I had to switch to my second hard-drive due to some problems I had with the other. My machines where booting while I started my presentation and by the time I needed to start with the demo they fortunately where booted properly.
Have you ever had some of these moments while doing demo's? Tell me, as somehow it's always funny to hear about thing's that go wrong :-D
Well, talking about thing's that go wrong, while browsing the web today I saw a nice picture about a demo that made me smile a bit.....
(just click on the image to see the origional size)