I guess I'd have to say it's a tie between the American Revolution and the French Revolution. I just find them both so interesting: how just a few people with sharp minds and a willful hope for a better life caused a full-scale revolution.
We've been learning about the American Revolutionary Era in both the Historical Methods and the Women's History class, so I'm not going to bore you with a synopsis of it. However, I will bore you with why I like to study it. The American Revolution is so interesting to me because (1) as an American, I'm naturally interested to know how my country came to be, how it's framework was designed, and whose ideas and convictions were made the fundamental bases of our nation's philosophies. Secondly, the American Revolution was one that resulted in the birth of a whole new nation, one unlike the world had ever seen. Not to mention the fact that 13 colonies were able to defeat the mightiest empire in the world at the time, with the mightiest military, and that is simply astounding when you think about it. The American Revolution shocked the world, and the world was forever changed. One might argue the actual legitimacy of the Revolution: I've heard it said that it wasn't technically revolution but more of a partition, but still. That single Revolution created a shout of freedom that echoed throughout the whole world...
...and eventually found its way across the Atlantic to Paris. Considering that the French Revolution was only inspired by our very own American Revolution, I find it only fitting that I should be equally interested in the two. Besides, a bunch of peasants overthrowing a centuries-old monarchy, eating cake, and chopping off heads. What's not to be interested in? Just kidding, but really. The French Revolution politically flipped France upside-down. The weak became strong, the first became last, and for once, rich and poor became equal. Again, one might argue the efficiency of the French Revolution due to the fact that about 24 years later a king was back on the throne and the classes were once again divided. Nonetheless, it really is fascinating.
For a glimpse into the American Revolution and French Revolution check out these primary documents:

