Free $5 Credit at TargetTicket.com
TargetTicket.com currently has a $5 credit promo code that can be applied to a variety of SD UltraViolet movies or upgrade to an HD version for a few bucks more.
A few movies to consider:
Transformers: Revenge of the Fallen
Across the Universe
The Big Lebowski
Transformers: Dark of the Moon
For a list of all $5 movies, click here.