I actually like Giada, despite her EXTREMELY low cut shirts. I've tried making some of her food and the flavors are really good. I got an amazing coffee brownie recipe from her show and all my family and friends love it.
These days I can't really stand Rachael Ray. I really liked her in the beginning but she seems to have become a cartoon of herself. Plus me and my mother always wonder if all her meats and poultrys are cooked properly. I tend to wonder if it just looks cooked on the outside and might be raw on the inside.
And I love Alton Brown. He is one of the most entertaining Food Network hosts. I absolutely love his show.