PSA: Are you a graduate student or postdoc thinking about applying for academic jobs in the future?
Watch. Job. Talks.
Watch them when not your area.
Watch them even if they don’t seem interesting
Watch them in the mornin’.
Watch them if you have to sneak in.
You’ll find out what a good job talk is like. Job talks aren’t quite the same animal as seminar talks. The goal of the speaker isn’t quite the same. It’s not just “here’s some cool data and a story”, more “look upon my fledgling research program and despair!” The talk is part of the application package designed to make people think “that person would be a great PI. Throw a bag of money at him!”
You’ll find out what a bad job talk is like. I have seen plenty of bad talks. Not overall awful but with a clear problem or two. Too much detail. Not enough detail. Awful slides with tiny fonts. A speaker that didn't know how to answer questions. (That is perhaps an underrated skill. Learn to answer questions well.)
You’ll see which candidates the department likes & which it doesn’t. Ask for people’s opinions about the talks. This is the profession you have chosen. Try to figure out how it works beyond your PI’s stump speech about fit and working hard.