Not quite what you are looking for but it's close and gives you a little bit of an idea. We are up there at least. Running plays of 10 or better and passing plays of 25+. http://www.sportingcharts.com/nfl/stats ... tics/2013/
Edit:
I think this might be the best way to go, they have passing and rushing 20+ numbers http://www.nfl.com/stats/categorystats? ... &Submit=Go
That one doesn't look as promising. You may just want to use the first link and say that that's all you could find.
I generally find that NFL Stats.com works just fine for figuring out explosive plays. They not only have it broken down in to 20 Yard+ plays ... but if you look just to the right of that, you'll see that they have #'s of 40 Yard+ Plays as well ...