Most companies like their public faces to be sober, measured and thoughtful -- but then, most companies don't have Steve Ballmer at the helm. Although he's been a , Ballmer has also been prone to public fits of behavior that at times appear to channel Pee Wee Herman on acid.

The most well-known of these is the infamous in which, center stage at a conference, Ballmer danced, howled, screamed and generally acted the madman to show his enthusiasm for Microsoft. Another YouTube favorite is the , which captured him soaked with sweat, screaming "Developers, developers, developers, developers..." until his voice gave out.

Bill Gates -- his geekiness and intelligence eventually won over the press, and he became a near-ubiquitous magazine cover boy before his .