Kickstarter only started recently with big projects (multimilion) and those said would deliver not before end of summer 2013 (and probably later). It is way too early for this question.

Project Eternity was my first KS I funded.  Then Star Citizen.  Both aren't due until 2014 at the earliest.  But both have tons of updates and very hopeful on them.  I've also backed Shadowgate.  Much smaller game and more a puzzle/adventure game.  But they already have a lot of it built so it's pretty much a sure thing to come out.  Last is Limit Theory which is still in funding stage (but will get it's funding).  I've funded that one mainly because it was cheap and it's a one-man operation who already has a great working technical demo.

I don't back anything that "smells" or seems over ambitious because I simply don't want to lose my money if they fail.  I've passed on a few that have actually funded but I figure I'll buy them *if* they come out when they go on super Steam sale.