Boeing 737 thrust reverser - GIF

[Inflight]

Growing up very near the Boeing C-17 Globemaster III final assembly plant, I witnessed many "short field" landings using the C-17's reverse thrusters. It is truly amazing to see such a large aircraft land and stop in just a few hundred yards. Quite loud, too.
The C-17 can actually engage the reverse thrusters while in flight, for what they call a Tactical Descent.