I was tinkering around today with HQ, and I was thinking it would be cool to be able to "jump back" or "forward" by the amount of time currently specified in the date range field. For example, if you had your range set for 8 hours, clicking on the left button (located to the left of the graph) would jump you back to the previous 8 hours, and likewise for the button on the right of the graph. I think that could be really useful.
DPF