Donnie Wahlberg: From pop to cop

As a Boston native, Wahlberg is a die-hard Celtics fan. Sitting with his brother Mark, left, and Adam Sandler, right, Walhberg cheered on the Celtics as they took on the Lakers at the Los Angeles Staples Center in December of 2007.
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By: Rachel Kossman, Boston.com Correspondent
As a Boston native, Wahlberg is a die-hard Celtics fan. Sitting with his brother Mark, left, and Adam Sandler, right, Walhberg cheered on the Celtics as they took on the Lakers at the Los Angeles Staples Center in December of 2007.