Overtime on Agile Teams?

My recent article on Overtime and Agile Teams was accepted and published in Software Quality Connection.  Here are a few statements extracted from the article to summarize its direction:

• "Predicating project plans on constant overtime is a bad idea." 
• "Agile requires whole people."
• "Overtime is for bumps."
• "You have to ask if your overtime is hiding problems instead of exposing them so that the team can solve them."