>> networks have to push hard to get noticed nowa day, and if it turns off a couple of fans it mightrhaps it's a tactic to get people watching television live. after all, nothing's worse than a spoiler. >> they killed him off! >> what? >> just ask "homeland" fan jennifer lawrence. >> i can't believe they did that. >> reporter: the takeaway? you'd better catch up on your favorite shows, because you never know who could be on the chopping block next. so, we asked our "today" facebook fans which tv character's death hit them the hardest over the years. and guys, overwhelmingly, people said dr. mark green on "er." 75%! but you disagree. >> i -- no, i think they're all good. i think -- i mean, i don't wish for death, but i think -- >> thanks for clarifying. >> i think it keeps shows fresh. it challenges the writers. and you know what? it's drama. >> i'm against it, personally. >> you're against it all? >> personal laeyz i'm against it. >> i don't have anything against it, but it's amazing how much it's a gut reaction we all have. we feel so emotionally attached to them, it's so hard to sa