First before we kick things off let´s not make this thread into a flame war.Note that I used the word "dislike" rather than "hate" so let´s moderate our rant.
With that said,I dislike:
Publisher:
Activision:Actually a couple of years ago Activision used to be my favorite publisher but lately I feel they are milking the Guitar Hero franchise making four games per year(without counting the DS iterations) that are unnecessary,so they can make more cash.
Developer:
Data Design Interactive:Their games are just not good.If you don´t know who they are they are the guys who made this masterpiece: