1. The alignment was actually in 1998
...and nothing obvious happened. The leading proponent of the alignment meme, John Major Jenkins, talks about the alignment being in the era of 2012:http://alignment2012.com/whatisGA.htm
The Galactic Alignment is the alignment of the December solstice sun with the Galactic equator. This alignment occurs as a result of the precession of the equinoxes.
Precession is caused by the earth wobbling very slowly on its axis and shifts the position of the equinoxes and solstices one degree every 71.5 years. Because the sun is one-half of a degree wide, it will take the December solstice sun 36 years to precess through the Galactic equator (see diagram below).
The precise alignment of the solstice point (the precise center-point of the body of the sun as viewed from earth) with the Galactic equator was calculated to occur in 1998 (Jean Meeus, Mathematical Astronomy Morsels, 1997).
Thus, the Galactic Alignment "zone" is 1998 +/- 18 years = 1980 - 2016. This is "era-2012."
So, yes there is still some alignment in 2012, but it actually peaked in 19982. It's an Astrology Thing
Astronomically there is nothing special happening on Dec 21 2012. From a astrophysics viewpoint, there will not be any special alignment that has a gravitational or any other effect on our planet.
Astrologically, if you believe in astrology, the alignment might be of significance, but keep in mind the alignment has been happening since 1980.