Welcome back, voyeurs, to the ultimate summer obsession: Big Brother 13! I'm not ashamed to admit that I get painfully over-involved in this show, following along with what's going on with the live feeds, watching Big Brother: After Dark for three hours every single night on Showtime 2 and becoming unhealthily attached to/angry at the houseguests.Frank Stallone Samantha Morton Natasha Lyonne LFO Shawn Pyfrom