Thousands of years ago, there were these people and they wanted to touch God. And so they decided to build a tower to reach heaven. And as they got into their project, the same thing happened to them that happens with any group of people when they get together... they stopped being able to communicate with one another effectively. Now, I wasn't there and don't know what happened exactly.
When they wrote this account up in the bible, someone decided to blame it on God. Like (s)he was just sitting up in heaven waiting to create all sorts of chaos below (kinda like Puck in Shakespeare's Midsummer Night's Dream almost). Right... Because God has nothing better to do than screw up our plans to understand her/him (and each other for that matter).
So... maybe it was more a matter of people not understanding one another, being too caught up in themselves to really be able to take the time to hear each other. And so... in their pursuit of a perfect relationship with God, they failed... due to miscommunication.
And we still have this problem... We still can't communicate effectively. We hide ourselves behind little walls of towers... trying to reach perfection in our relationships -- with God -- with each other... and we fail miserably, because we can't communicate. We try and it's like we speak different languages.
Or maybe that's not how it went. Like I said, I wasn't there. And only God knows. And if (s)he is just sitting up there and laughing... well, I guess we're all just doomed to babble randomly at one another forever...