When ordering gelato and getting multiple flavours, I tend to order the richer/stronger flavours first, as they tend to end up at the bottom of a cup (or cone). That way I can taste the more gentle flavours (typically fruit) first.
Also, I try to get flavours that complement each other -- e.g. fruit flavours with vanilla or yogurt or honey, choc and coffee and hazelnut, pistacchio and raspberry
What are some of your favourite ice cream/gelato combinations? Other ordering strategies?