I've got three, not world shaking but they all helped my family:
1. Raising the age you can cover your adult child on your health insurance.
2. Adult child no longer needs to be a student to be covered by your health insurance.
3. Making credit card statements clearer to read in terms of the cost of the credit and making them have the same payment date every month.
Before that law I actually had one card that the billing cycle would fluctuate as short as 28 days or as long as 32 days. I called customer service and asked them WTF, cust. svc. explained to me that months don't have the same number of days. Really? I had no idea! So I then asked what month has 32 days. Bank of America