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Published 14:24 30 May 2014 BST
Updated 06:22 18 Dec 2014 GMT

He was the loveable little rouge with the slingshot firmly stuck in his back pocket. Dennis was a menace with an adorable smile testing his adventures at every turn (normally to the annoyance and trauma of neighbour Mr.Wilson)
Mason Gamble went on to star in another memorable role as Dirk Calloway, in Wes Anderson's critically acclaimed 1998 film Rushmore. Other roles included a stint in Disney’s Spy Hard and took a place alongside Uma Thurman and Ethan Hawke in Gattica.
Following a successful transition from child star to grown actor, Gamble went on to UCLA in 2004, later graduating from UCLA's Dentistry program in 2008.
Looks like Mr.Wilson’s going to need a new catch phrase. Our suggestion?
“Dentissst!”Explore more on these topics: