I know these Matrix films like the back of my hand, so I'll be more than happy to steer you in the right direction.
The chapter that I am referring to is chapter 15 (I have the PAL version).
The first fight scene between Neo and the three agents has some awesome bass in it. When Neo kicks the one agent into the concrete wall, my couch shakes nicely. When Trinity fights the policemen, there are one or two big hits. When she knocks the officier with her helmet, there is a big whollop. You feel very sorry for that guy after that hit.
Now on to the fight sequence of choice. The scene I was referring to is between Neo and 100 Smith's. In that fight scene, there are lots of punchy hits, not particularly deep, but punchy. Each punch and kick should have different timbre.
Further in the fight, things get more and more exciting and the bass reflects in this too. When Neo does a back flip to kick one of the Smiths down, he comes back and does a jumping kick, falls down and then gets back up with a cool sidekick. That sidekick causes my room to pressurize. I can't even imagine what the effect would be like with your IB.
Try it.
Also, further on in the fight there are slow motion parts. Tons of bass in those sequences. Must be at least 5 slow motion sequences. You'll know instantly when you feel it.
When Neo tries to escape the "sea" of Smiths, he uses them as a stepping stone to get away, then all of a sudden, one Smith jumps and knocks him over. That hit knocked me in the chest slightly with my SVS PB10. Also, at the very end of the fight, Neo uses his strength to overcome all those Smiths who've piled on top of him, there is also tremendous deep bass there too.
Also, another great scene that I tested today. Watch the scene in Reloaded towards the end when Neo exists the "construct" and saves Trinity falling. You'll see the door start to melt and there is incredibly bass in that scene.
Neo swooshes in with fire trailing behind him and in my HT, I get this real room pressurizing effect. Excellent test material in my opinion.
--Sincerely,