My colleague told me about this video clip which explains the difference between a man's brain and a woman's brain. It's funny, very funny, yet makes perfect sense!
In a nutshell, Mark Gungor says that men's brains are like tool boxes with small compartmentalized drawers where each drawer is dedicated to one, single subject such as Football, The Car, The Wife/GF, The Job. When a man needs to think about one of these subjects the drawer is opened, he thinks and then the drawer is closed. One subject at a time.
On the other hand, a woman's brain is like a ball of wire. Each thought is a 'strand' of wire; however, all the wires are meshed together so each single thought will spark off another thoughts because they're all intertwined.
There are more examples so watch the clip ;)