While checking out which one would be the most interesting combination that will create the deadlock for f1 championship this year I found this:

If Alonso finishes 2nd and Hamilton Finishes 5th Alonso and Hamilton will have same points as well as same 1st, 2nd, 3rd and 4th place finishes. So title will be decide by more 5th places, and Lewis Hamilton will win because he just got one extra 5th place :)

A nice blog on All possible scenario and who is favorite to win