http://www.myfonts.com/fonts/pink-broccoli/patsy-pb/

Patsy is a quirky sans-serif font inspired by the titling sequence from the 1964 film, “The Patsy”, starring Jerry Lewis. Heavyweight, yet fun and full of personality, it was a lettering styles that was so much fun to flesh out and make into a typeface. I've opened up the letter spacing lightly from the original film poster design for better readability at a range of sizes. With an alternating all-caps character set, and offbeat letter weighting, Patsy is fun to typeset with as the font auto-switches between Capitals and Lowercase (alternate capitals) no matter if you type all caps or all lowercase.