Plot: On this week's Rotten Tomatoes Show, Brett Erlich and Ellen Fox lead reviews of "The Last Exorcism," "Piranha 3D," and "Vampires Suck," the latest in blockbuster spoof films, this time making fun of Hollywood's obsession with fangs, blood, and Robert Pattinson. Plus, they count down the Top 5 Heists in Movie History, and Ice Cube shares his Five Favorite Films