I will be playing as Embermage. It all comes down to what kind of a style you like to play like ranged, tank and so on. Check out this thread that's about skills, it might help you. http://www.reddit.com/r/Torchlight2/comments/zinvr/would_reddit_like_the_rest_of_the_talent_trees/

My friends and I are going to create a trio of gentlmanly outlanders with bulldogs. xD But other than that... I don't know. I'll just have to try them all out and see, I guess.

I'll be rollin' an Embermage, though I agree that all classes look fun. I definitely try out all classes at some point. As west linked before, take a look at the skills of each class. If you don't want to spoiler them, watch a couple gameplay videos. Or, the traditional and classy style, roll the dice.

I'm gonna be a dual Engineer Construction... I played it on Beta and it was a laugh...
It has a MediBot and a ChaingunBot to keep you green (in this case, have a big red ball in your HUD)...

I'll choose Engineer Aegis because I love being TANK and Engineer-Aegis is one of the tougher character that exists, and moreover we can have shields and attack with them. That can be a difficult target to destroy...

I just want to run around with a sword and kill stuff. Magic and ranged weapons.... ehhhhh

I generally hate melee based characters but I must say since I played the Berserker in the tl2 beta it imediatly became my favorite class. I just love the habilities overrall and the animalistic feeling of the character. After that I'll probably play ether the Engineer or the Outlander. The Embermage is the less atracting class for me since it's basically just a revamp of the Alchemist, or at least it feels like it (not saying that's a bad thing, the Alchemist was my favorite class back in TL1, but I just played it way too friking much).

I think that eventually I'll play all classes but I'll start with the Berserker

I'm probably going to start embermage, if not outlander.

Engineer or Embermage, leaning towards Embermage as first character =)

Berserker is one of my favs then ill play the engineer class

I'll probably start with outlander, as i played range in TL1. Will fill them all out eventually.
A more pressing question is what pet will I use?

Berserker.

I really liked simple ray's idea of rolling dice for it so I broke out a d4. *Roll* I got a 3, so I'll be playing a berserker the first time through. He looks fun :)

Probably i will choose berserker or engineer. Dunno yet which of them, maybe i will just flip a coin. Btw does anyone know if berserker can dual wield weapons like swords, axes, maces?