08/01/2008 05:12 am ET | Updated Nov 17, 2011

Life Is Good...Or So Says The Popular T-Shirt

"I think the happiest people alive are the ones who are happy with the simple things," said Mr. Piotrowski, who, with his wife and their two daughters, were among the thousands in the park for a Life is good festival, one of about 17 such events around the country this summer for the growing legion of Jake fans.

The Piotrowskis discovered the brand while camping in Wisconsin several years ago and have since acquired at least 20 T-shirts, 4 coffee mugs, matching pajamas and a paddleball set that show Jake's uncynical and ever-smiling face, which never seems to be discomforted by humidity, adversity or even that he looks more like a French mime -- with his beret and white face -- than a symbol of American optimism.

Read more on NYT