Twilight the movie on DVD in March 2009?

i know that the movie is being released 3/21, but im trying to figure out which store on or off line that is going to have the best deal. like hot topic is going to have a bonus film cell from the movie that u can touch and stuff and take home. but what stores are going to have extra prize thingys if u get the DVD from them in a certain amount of time. Like when Harry Potter and the Goblet of Fire came out, circuit city had a lithograph. what stores are going to have what??