Through tonight (12/2), you can get a 12-month subscription to Hulu for only $1.99 per month. The offer is good for new and returning subscribers (who haven't had a subscription in the past 12 months). It's also for the Hulu ad-supported plan.
After 12 months, you'll be charged the regular monthly price of $5.99 per month. So, if you don't plan on continuing after the special, you'll need to mark it in your calendar to cancel next year.