Ordered as closely as possible according to the number of hours I've put into a feature, over 21 years:

• Python scripting
• CR2 editing
• Waiting for the Cloth Room to finish running, while periodically cursing or throwing the Poser 5 manual across the room
• Pre-weight-map joint editing
• Post-weight-map joint editing
• Waiting for Firefly to finish rendering
• Morph Brush
• Bullet Physics

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Cage can be an opinionated jerk who posts without thinking.  He apologizes for this.  He's honestly not trying to be a turkeyhead.

Cage had some freebies, compatible with Poser 11 and below.  His Python scripts were saved at archive.org, along with the rest of the Morphography site, where they were hosted.