How do you choose your set-lists?

Someone either calls out the name of the next tune while we're on stage or starts playing it. If no one can think of a tune, or we only have a couple tunes left, or somebody doesn't want to play something because of tired chops, then we might argue about it for a few minutes.

(nb, for our big show on Friday somebody actually wrote a setlist)

Recently we've started giving more consideration to our placement in the overall show. For example, if we have an early spot on a Friday night, we tend to frontload slower stuff and new still-in-testing material so we can kick ass toward the end when people are getting there. Also, if it's a REALLY late slot, we try to stick to higher energy material more.