The digital movie rental deal of the day over at Amazon today is the supernatural horror film Paranormal Activity 2, which is available for rental for only $.99.

This deal is valid only for today, Thursday, May 19, 2011, until midnight PST. Once you activate the rental through Amazon’s Instant Video service, you’ll have access to the movie for 24 hours. If you’re interested in purchasing the digital version, the cost is $14.99.

Also, if you’d like to own a physical copy of the movie, the Blu-ray is available for $20.99 (that’s 48% off the list price) and is part of Amazon’s “Buy This DVD and Watch it Instantly” program “” you get the film as a FREE digital rental you can watch immediately when your purchase the physical copy. [The DVD is on sale for 38% off at $18.49, but is not part of the Watch it Instantly program.]