Not that I'd ever plan to give up PB! But sometimes you might want to mix things up. Here's an article from Epicurious on some good alternatives (includes tings like apple spread, almond butter and cashew butter - yum!).
The folks at EatingWell.com rate natural peanut butters. Which is the peanuttiest? Read more to find out (note: this is not a comprehensive survey of all commercially available natural peanut butters).