Vel'Koz vs. Nunu - Baron Diversion

Before you say that I wasted my ult on a minion line, that was the entire point. I was pushing the lane as hard as I could to catch someone's attention while my team went for the Baron, and I would have had no opportunity or plan to use it on a defending force and live, doubly so since it was Nunu, and he was clearly tired of my shit at this point.