Pillars of Eternity: Backed with $20-25, don't exactly remember which package I choose. Don't regret it though. Excellent game.
Broken Age: Backed with $20 for a digital copy. Don't regret this one either. A bit short and it's been a while since the first episode was released, but I think it will be remembered as a good adventure game.
Broken Sword 5: Backed with $20 for a digital copy. Turned out pretty decent. It's certainly not as memorable as the first game, but a good effort anyway.
Massive Chalice: Backed it for the Brad Muir-involvement. I hope it turns out well.
Yes, you should buy Wasteland 2. It's pretty good. Is it the best place to start? No. Fallout is always the answer to this. If you don't like guns in your RPGs, then Baldur's Gate is your other option.