Ultimate fighter Chuck Liddell may be known for his swift kicks, take-down defense knockdown blows, yet he also has an Achilles heel: The smooth and creamy flavor of peanut butter.

When he's working out, he rolls a wheelbarrow of rocks up a hill. When he's breaking his diet, he reaches for a spoon a jar of PB.

We asked Chuck to blindly taste a range of peanut butters, from the kooky white chocolate peanut butter to that after-school special, Jif.

Read his which PB won his Peanut Butter Smackdown.
The Ultimate PB Challenge