Place it right after the reveal in your edit, once the audience has seen the impressive result for themselves, then follow it with a DJ Airhorn to turn the praise into a celebration, or cut to a Law and Order Dun Dun when the impressive feat turns out to be a trick.
About this sound
In this just-under-four-second clip, Danny DeVito delivers the line impressing the heck out of me with slow, sincere admiration, as if he has just watched someone pull off something he did not expect. It feels funny, warm and a little over the top, the kind of praise that lands as a joke and a compliment at once. The line comes from DeVito's television work.