Whitney Matheson

USA TODAY

We've seen a lot of Simpsons merchandise over the years, but last year was the first time products incorporated one of the coolest aspects of the show: its guest stars.

To celebrate 25 seasons of the 'toon, NECA and Twentieth Century Fox Consumer Products are unveiling 25 action figures based on the series' greatest celebrity guests. The first wave included Simpsons-ized versions of Hugh Hefner, James Brown, Tom Hanks, Kid Rock and Yao Ming.

Today I'm happy to exclusively reveal the second wave of figures: The Who, Mark Hamill, Tony Hawk, Lucy Lawless and Britney Spears.

These little guys go on sale in April at retailers including Toys R Us and Spencer's. So now you know exactly what to get that Xena fan in your life!