Seems weird to be thinking about Halloween in February, but this is a pretty good deal if you know you're going to Halloween Horror Nights at Universal. They're offering a BOGO... two nights for $81.99 plus tax according to Fox 13.
The offer ends June 5th. You can't use the tickets on Saturday nights, but you don't have to use the tickets on consecutive nights which is nice. They're starting even earlier this year. HHN will run from September 6th through November 2nd.
The deal is only available online via their website.