Well, That Explains It.

Stan posted a link to the Sesame Street Personality Test.

Ernie:
Playful and childlike, you are everyone's favorite friend - even if your goofy antics get annoying at times. You are usually feeling: Amused - you are very easily entertained. You are famous for: Always making people smile. From your silly songs to your wild pranks, you keep things fun. How you life your life: With ease. Life is only difficult when your friends won't play with you!

Bert:
Extremely serious and a little eccentric, people find you loveable - even if you don't love them! You are usually feeling: Logical - you rarely let your emotions rule you. You are famous for: Being smart, a total neat freak, and maybe just a little evil. How you life your life: With passion, even if your odd passions (like bottle caps and pigeons) are baffling to others.

I got Ernie. Lee got Bert.