Right now Amazon is offering 48-hour rentals of the digital versions of all 4 of the Twilight movies for only $0.99 each!
For fast selection:
To sweeten the deal, you get a $1 Amazon MP3 credit for your movie purchase! (limit 1) There are tons of songs that are $0.99, so free after credit. I got the new Diamonds by Rhianna song. You can see a large selection of best selling $0.99 songs by clicking here. Feel free to browse around though because there are MANY more free songs to find in the MP3 store!