Hulu has 1.5m paying subscribers

"We grew the business 60% from 2010 to approximately $420 million in revenue. We exceeded our plan despite the soft advertising market (economy) in the second half of 2011. Overall the Hulu ad business grew aggressively and Hulu Plus materially exceeded our plan.
Hulu Plus now has more than 1.5 million paying subscribers and this number continues to grow extremely fast. Hulu Plus has reached 1.5 million paid subscribers faster than any video subscription service launch (online or offline) in U.S. history. We are attracting more than 2x the number of subscribers each day when compared to this time last year."

Source:  Blog post from Hulu, 12th January 2012