Double Super Times Pay VP gives you 400,000 credits if you get dealt a royal AND the multiplier comes on during the deal. That's only a 1 in 9.6 million chance of happening.
In March 2015 at Rincon, I was dealt AsJsTsKs, and the multiplier came on. The game pauses when it does this, as you wait to see which multiplier you get.
I just needed a Qs to get $200,000 (this was a 50c/credit machine).
Indeed, out came my black queen!
A queen of clubs, that is.
On a happier (but much lesser) note, I just got dealt this yesterday:
That happens about 1 in 53k hands dealt.