Thief - "Ugh it's hot, I hope it's going to rain soon" Guardian - "Are you kidding me?!?" Wizard - "And I hope those guys down there are not gonna notice us..."
I will definetly try them, I think some people can make really nice stuff, sometimes even better then the developers could! ( you should scout these and ask them for tips for future content ;P ) I might even try to make some myself if I will feel up to the challenge :)
Elf, I was always playing humans but that got kinda boring over many years, so few years ago I did start to play other races, in most games I prefer Elfs, but in some I prefer to go for some kind of animal-like race since they have it :)
For me it was the latest one http://www.youtube.com/watch?v=4fC_hxyrF4w The Siege of Neverwinter - Part 3, it's pretty well done, longest one so far and I really liked it :) I also like good action videos
I would try all the different classes that interest me, to decide what I would play when the game goes live also a bit of exploration to see how the world looks, but not to much so I don't spoil it :)