Donnie shared this video clip of him working on Blue Bloods and looking for a Sham-wow.
He signed some NKOTB memorabilia for a fan that found him on the set:
As he was riding into work, a song by singer Bobby Caldwell came on the radio:
Donnie was also photographed on the set of Blue Bloods earlier this week! Photos by Jose Perez/Getty Images. Click here for more photos!