If I have understood correctly, gaps on charts are supposed to be covered eventually. (Please someone correct me if I'm wrong here!!! (and if I'm wrong about gaps then could you please explain how it works... ).
I know this is a stocks forum but there does seem to be a bit of interest in forex here and I just looked at the NZD/JPY chart and there's a gap around 77.8 on the 20th of june and another one around 77.25 on the 14th of June. The present price is around 78.00.
Whether or not this is a valid trade I'm not really certain since I tend to focus on the long term (months, years) rather than short term with forex but just thought I would alert anyone who is interested. Unfortunately I don't seem to be able to paste a chart from my broker's site. I was looking at a 30 minute chart though.