Jack McBrayer had a few problems when it came to working with Bryan Cranston on "30 Rock." In an interview with Vulture, the "30 Rock" star said he couldn't keep it together when doing scenes with Cranston, who was playing Kenneth's stepdad Ron, and Catherine O'Hara, who was playing Kenneth's mother.

"[Cranston] is the best, and the scenes we did together, I was dying. I messed up a lot of takes, because I just kept laughing. I was laughing in their faces. And I was so starstruck," McBrayer said.

But his biggest problem? McBrayer said he's not caught up on "Breaking Bad." At all.

"I have seasons one, two, and three on DVD, so I was mortified, because I didn't want to ask any questions, but everyone else was coming up and asking questions, so I had to [puts fingers in his ears and starts singing] tra la la la la! Because all the crew was caught up, and I wasn't," McBrayer said.

To avoid spoilers and give off the impression that he knew all about "Breaking Bad," McBrayer said he kept all of his questions "sort of innocuous."

"'How do you like your Starbucks?' 'So, where do you live?' Like Being a Person 101," he said.

"30 Rock" is coming to an end in January after seven seasons. Series creator and star Tina Fey told The Huffington Post in early October that she was still unsure of what the final scenes of the show would be.

"We started having a conversation of what we wanted our final images to be," Fey told The Huffington Post on the red carpet of the "30 Rock" Season 7 premiere party. "It got really emotional, so we kind of backed off it. Then we said -- every day at lunch our writers take a little break and watch a TV show and most times it's 'Honey Boo Boo' or 'Breaking Amish' and I was like, 'Guys, maybe we should start watching some classic TV finales.'"

Click over to Vulture to read the complete interview with Jack McBrayer.

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  • "Last Lunch"

    Tracy Morgan as Tracy Jordan, Jane Krakowski as Jenna Maroney

  • "Last Lunch"

    Jack McBrayer as Kenneth Parcell

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    Tracy Morgan as Tracy Jordan, Jane Krakowski as Jenna Maroney

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    Tina Fey as Liz Lemon

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    Tina Fey as Liz Lemon, Tracy Morgan as Tracy Jordan

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    Sue Galloway as Sue, Katrina Bowden as Cerie, Judah Friedlander as Frank, Keith Powell as Toofer

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    Judah Friedlander as Frank, Keith Powell as Toofer

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    Scott Adsit as Pete, Tina Fey as Liz Lemon

  • "Hogcock!"

    Jane Krakowski as Jenna Maroney

  • "Hogcock!"

    Jane Krakowski as Jenna Maroney

  • "Last Lunch"

    Sue Galloway as Sue, Katrina Bowden as Cerie, Judah Friedlander as Frank, Keith Powell as Toofer

  • "Hogcock!"

    Alec Baldwin as Jack Donaghy

  • "Hogcock!"

    Tina Fey as Liz Lemon, James Marsden as Criss

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    Tina Fey as Liz Lemon, James Marsden as Criss

  • "Hogcock!"

    Tina Fey as Liz Lemon

  • "Hogcock!"

    Alec Baldwin as Jack Donaghy

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    Alec Baldwin as Jack Donaghy

  • "Hogcock!"

    Jane Krakowski as Jenna Maroney

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    Ice-T as himself, Richard Belzer as himself, Jane Krakowski as Jenna Maroney

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    Ice-T as himself, Richard Belzer as himself, Jane Krakowski as Jenna Maroney

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    Jack McBrayer as Kenneth Parcell

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    Tina Fey as Liz Lemon, Jane Krakowski as Jenna Maroney

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    Tina Fey as Liz Lemon

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    John Lutz as Lutz, Judah Friedlander as Frank

  • "Last Lunch"

    Katrina Bowden as Cerie, Tina Fey as Liz Lemon, Keith Powell as Toofer

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    Katrina Bowden as Cerie, Judah Friedlander as Frank

  • "Hogcock!"

    Julianne Moore as Nancy, Alec Baldwin as Jack Donaghy

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    Julianne Moore as Nancy, Alec Baldwin as Jack Donagy

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    Alec Baldwin as Jack Donaghy

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    Alec Baldwin as Jack Donaghy, Jim Downey as Downey

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    Tina Fey as Liz Lemon

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    Alec Baldwin as Jack Donaghy, Jim Downey as Downey

  • "A Goon's Deed in a Weary World"

    Dante Hoagland as Terry, Tina Fey as Liz Lemon, Marina Bond as Janet

  • "A Goon's Deed in a Weary World"

    Dante Hoagland as Terry, Tina Fey as Liz Lemon, Marina Bond as Janet, James Marsden as Criss

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    Tina Fey as Liz Lemon, James Marsden as Criss Chross

  • "A Goon's Deed in a Weary World"

    Tina Fey as Liz Lemon, James Marsden as Criss Chross

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    Dante Hoagland as Terry and Marina Bond as Janet

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    Tracy Morgan as Tracy Jordan, Jane Krakowski as Jenna Maroney and Tina Fey as Liz Lemon.

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    Elaine Stritch as Colleen Donaghy, Alec Baldwin as Jack Donaghy

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    Tina Fey as Liz Lemon, Andrea Martin as Bonnie

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    Jack McBrayer as Kenneth Parcell, Tracy Morgan as Tracy Jordan

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    Tina Fey as Liz Lemon, Alec Baldwin as Jack Donaghy

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    Alec Baldwin as Jack Donaghy, Steve Whitmire as Kermit

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    Tina Fey as Liz Lemon, Alec Baldwin as Jack Donaghy

  • "My Whole Life is Thunder"

    Alec Baldwin as jack Donaghy, Elaine Stritch as Colleen Donaghy

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