What is the significance of the main zombie? Love?

Rating: 8/10 (15 December 2007)

This movie focused a lot on a "head-zombie" character. He is the one pushing his way through the zombies at the end in the lab. Then pounding on the glass.
Was that his wife/lover zombie that Will Smith was testing on in his lab, the same one he captured in the bag outside the bank? That would then mean that this main zombie was the one who walked out in the sunlight and screamed at Will Smith when he captured her in the bag trap. This would then mean that he was the same zombie that set up the boobie trap for Will Smith in the street and released his dogs on him. He also seemed to be the same main zombie that was leading the night attack on the pier when they almost killed Will Smith.
If this is all true, what is the meaning of this? That the zombie's still had emotion on some level? If it did all tie together and have a deeper meaning, they sure did a horrible job of implementing it to the viewer. I understand that "listen for signs and everything happens for a reason" was kind of the theme of the ending, and that the head zombie created a butterfly in attempts of breaking the glass, then awakening Will Smith to understand the cure, but honestly, what the hell? and if you agree that the head zombie was trying to rescue his zombie mate and set up the boobie trap for Will Smith in the street... what then? Was he going to ask Will for directions and keys to the lab? Nick Spears myspace.com/nickspearscomedy