To create a reflection, like the one in my bathroom scene in Folie or in the pond scene by raybearmass is simply a matter of creating an identical set and then rotating it 180 degrees. Sometimes I like to use the frosted glass texture, (it's from one of the doors), to create a material for the glass, then adjust transparency to suit.
raybearmass also found this great app for making your reflections move
On a personal note, I've now started work in my new job in my new city and so I'll post some of my Antics-Lego experiments soon. Thank goddness for sykpe so I can keep intouch with the family.