October 16, 2009 8:36 pm Tina Fey Reveals New “30 Rock” Story Lines, Guest Stars Tina Fey talks about who will be returning for the fourth season of “30 Rock” and hints about how their story lines will play out. Plus, will Justin Timberlake guest star? US & World Videos 1:07 Britney Spears spotted as authorities respond to alleged hotel incident 2:15 Prince William and Kate Middleton ‘going through hell,' friend claims (report) 8:01 Lady Gaga's outfit changes, Rihanna's bold looks and more iconic Met Gala moments 2:48 Taylor Swift fans react to Jake Gyllenhaal and Sabrina Carpenter's ‘SNL' appearance 2:05 Whoopi Goldberg reveals who will inherit her fortune