Will be, of course, Netanyahu. Though it will take a while. Until then, I'm mostly not commenting on the process of constructing (or de-constructing?) our next government. Half of what you read or hear about the process is spin, half is trial balloons, half is negotiating ploys, half is bad faith and the final half is people talking through their hats. So there's no point in trying to comment on any of it.
What is clear is that there are only two possibilities. The positive one is that three of the four larger parties will set up a governing coaltion that will be stable, possibly efficient, and could serve us well. I think that's what the voters wanted in the first place: a large centrist coalition, perhaps right-leaning but not fatally so. (Of course that's what I'd say, what with being a centrist myself: but I do think that's what the numbers say). The negative possibility is that we end up with a narrow majority of everyone on the right, many of whom are incompatible with each other, where the agendas of the far right will dictate all sorts of foolishness, we'll be treated to to a year or two of high political drama, and the next elections will be in 2010.
It could go either way.