Newly issued bonds have a current rate of 4.66%, which is 1.1% fixed + 3.54% variable based on inflation. You must hold them for a year, and if you hold them for less than 5 years you lose your last 3 months of interest.
What are your alternative things to do with your money? Money markets are around 1% and CD rates stink too. If you have any debts, especially credit cards, it might be better to pay those off.
You must have bought yours right after they came out, which is what I did. I'm real happy with that rate, tax-deferred. I'm going to sit on mine as long as possible. It's a nice inflation hedge.