It wasn't until I turned my volume back on that I was truly awestruck by the Guild Wars 2 pre-purchase trailer. Listen to it. JUST LISTEN TO IT! Imagine brushing your teeth to this. As the music crecendoes, you gargle, finally at the last gasp, you spit! EPIC AS ALL HELL.
That said, Guild Wars 2 is almost here, and pre-purchasing can ensure that you lock down the name you want and get early access. If you're looking to stay competitive with the pack come launch day, those extra hours on the server can help you get set up for the flood of newbies joining without having played the original title.
What class are you going to roll first?