October 28, 2010 6:38 pm Hottest Halloween Costumes Jillian Mele gives the lowdown on the most popular costumes this Halloween. US & World Videos 2:54 UPenn leaders reiterate to pro-Palestinian protesters that they need to disband 3:33 Summer-like temperatures continue 1:44 Pro-Palestinian protesters remain on UPenn's campus despite warnings to disband 8:39 Gina Rodriguez gushes 0ver motherhood with son Charlie 2:22 Scarlett Johansson and Colin Jost have date night at White House Correspondents' dinner