When the first FileMaker DevCon Developer Cup took place at FileMaker DevCon 2014 many people asked me why I was not participating. So I applied for the next one in 2015. I was selected out of the over 1500 attendees to be one of 12 actually competing, and I won both the separately evaluated design challenge and the whole contest as well.
The second example I was showing in my session Marvelous Optimizations at Pause On Error [x] London 2011 was the script for selecting Random Set of Records. I found this example in the FileMaker Knowledge Base and optimized it to run at least 158 times faster when selecting 10 random records out of 50,000.