Isaiah 6

In my opinion, the most intense calling of an individual happens in Isaiah 6. God mosying around in the Jerusalem temple with a bunch of angels, with special effects everywhere? Atonement, and a possible Trinity reference? Yup. Beats Paul getting knocked off a horse and blinded. Beats Moses talking a tree on fire. Beats Ezekiel...wait. Never mind. You can't really beat Ezekiel...

But yes. The most amusing part is probably verse 8.

Then I heard the voice of the Lord saying, “Whom shall I send? And who will go for us?”
   And I said, “Here am I. Send me!” 

- Isaiah 6.8

It's not hard to imagine God just looking around, pretending not to see Isaiah, and Isaiah just jumping up and down, waving his hands. "I don't know what's going on, but I'm here, I'm here! Send me!" (Maybe I watch too much anime...). A good reminder for myself that He calls the willing, and equips them to become the ready, just like what He did here for Isaiah.