We know he is one who knocks but Breaking Bad star Bryan Cranston proved he is also the one who sings at Saturday night's Screen Actors Guild Awards.

The 57-year-old actor, who played chemistry teacher turned drug manufacturer Walter White in the acclaimed drama, broke into song as he picked up awards for Outstanding Performance by a Male Actor in a Drama Series and, along with the rest of the cast, Outstanding Performance by an Ensemble in a Drama Series.

Accepting his gong, Cranston sang "I won a SAG Awaaaaaard!" before delivering a gracious and funny speech about his part in Breaking Bad.

"I've had so many crappy jobs in my life, I gotta tell ya. I loaded trucks downtown - coal, dust, dirt in every orifice," he said. "People yelling at you - Cranston!! Move faster! Work harder! And the only thing that got me through, was imagining, dreaming, that one day I could actually make a living as an ACTOR and that's what got me true. Thank god!"