There's a scene from a show called "Fallen Angel." I've never read the show, but the scene was pretty cool.
If ages really don't matter, there's a scene in Marsha Norman's "Third and Oak" which is also really good. High stakes, lots of character background. One character is about 24 or so, and the other is probably late 40s.
Why do we play with fire?
Why do we run our fingers through the flame?
Why do we leave our hands on the stove, although we know we're in for some pain?
-tick...tick...BOOM!