Thank you for your kind words, Nathanael. I already noticed the 'father and son' group, but my son is a bit too young to actually build a model. Maybe we will sign up in a few years :)
With the winter months coming up, I'm thinking about creating a big MOC. My first thought is using the parts in set 6753 Highway Transport to build a remake of the 744 crane truck model:
http://www.peeron.com/inv/sets/744-1