Take anesthesiology, for one example. Unless you're one of the 5.3 million people who have already heard this, then you must click and listen, for the smile value.
These guys demonstrate Bonus Life Tip #4: one can have an extra life even while the main one is still going on.
Another example: I talked with a successful lawyer this past week who's also in three -- or was it four? -- bands. Probably makes him much better at his work.