WARNING! THIS IS VERY GRAPHIC FOOTAGE!
As bad as much of kosher slaughter is (think Rubashkin's throat-ripping with a meat hook, for example), hallal slaughter is still much more cruel. The truth is, the most humane slaughter might be the slaughter that produces the beef for McDonalds and other fast food chains. Even so, I think it's better to give up meat until kosher humane slaughter becomes a reality.
[Hat Tip: Conserva-Guy.]