The beginnings of the rise of the East, in particular, China. I mean, if we include 2010 in this decade (and ignore 2000, obviously), then we will see China growing to becoming the second biggest economy in the world.

Political & Economic:

1. Rise of China and ASEAN
2. The Middle Eastern wars (Afghanistan, Iraq, Lebanon, ect)
3. Iran & Nukes (still a developing thing, but we've had a few years of appeasment)
4. 9/11
5. Economic recession
6. Continuing EU growth
7. African stagnation, wars, abuses despite aid

Technology & Science:

1. Quantum Computing
2. Cell Phone & Broadband proliferation
3. Internet Growth
4. Job Virtualization
5. Nintendo Wii
6. Finding water on the moon, Mars
7. Oceans on Titan
8. Stem Cell Research & Results

Thats about it for me.

The rise of islamic terrorism.

It was never as prominent in the West untill the turn of the centuary.

Internet, terrorism, Avatar, Final Fantasy XIII, Wii, Playstation

Ill let you know when it is over at the end of 2010.