Sometimes it's the understated celebrity cameos that do the trick on the Super Bowl.

Johnny Galecki certainly fits the bill, and has picked a good time to make his commercial acting debut—in one of two charming 30-second Super Bowl ads from Hyundai and ad agency Innocean, both of which were posted online Monday.

Galecki, 38, known for his work on Roseanne and The Big Bang Theory, stars in a spot called "Nice," directed by Jim Jenkins. An attractive woman pulls up next to him on the road. They're both driving 2014 Hyundai Elantras. "Nice ride," says Galecki with an awkward smile. "Nice try," the woman replies, and heads off. He trails her, eventually catching up, and humorously tries out other lines, with extremely limited success. After another amusing celebrity cameo, the spot ends with a visual that's comically over the top.

Including Super Bowl worthy spectacles while lightly poking fun of them at the same time is often a winning strategy, and Hyundai pulls it off nicely with "Nice."

"I've always loved Super Bowl ads—the commercials during the game are always the highlight for me," Galecki said in a statement. "In this Hyundai spot, there's a car chase, there's explosions, and even a car jump—it's exciting, cinematic and filled with humor. I can't wait for everyone to see it!"

The second spot, "Dad's Sixth Sense," directed by Frank Todaro, is cute, too. It's all about slapstick humor, as a father saves his son from physical harm through the years—although when it comes time to learn how to drive, it's the 2015 Hyundai Genesis that takes care of him the best.

At one point in the ad, Dad gets whacked with a piñata stick, which is among the more reliable ways to get a laugh. But in fact, many of the scenes here will get a chuckle. (Bonus tie-in: The spot features the song "Count On Me" by halftime-show performer Bruno Mars.)

And speaking of chuckles, Jeff Bridges even giggles a bit in the voiceover at the end of "Nice." That sums up the vibe of these two spots—simple, laid back, fun loving and cute. They should do well on Sunday.

CREDITS

Client: Hyundai Motor America

Title & Length: "Nice" :30

Product: Hyundai Elantra

Air Date: Super Bowl 2/2/14

Agency: Innocean USA

Executive Creative Director: Greg Braun

Creative Director: Robert Prins

Creative Director: Max Godsil

Art Director: Aisha Hakim

Copywriter: Matt League

Director of Integrated Production: Jamil Bardowell

Sr. Producer: Nicolette Spencer

Producer: Chris Schaldenbrand

Production Company: O Positive

Director: Jim Jenkins

Executive Producer: Ralph Laucella

Executive Producer/Line Producer: Marc Grill

DP: Bojan Bazelli

Editorial: Arcade Edit

Editor: Paul Martinez & Greg Scruton

Managing Partner / EP: Damian Stevens

Executive Producer: Nicole Visram

Post Producer: Kirsten Thon-Webb

Assistant: Pete D'Andrea

Telecine: Company 3 LA

Producer: Matt Moran

Colorist: Sean Coleman

Online & FX: The Mill LA

Audio: Eleven Sound

Artist: Scott Burns

Executive Producer: Suzanne Hollingshead

Client: Hyundai Motor America

Title & Length: "Dad's Sixth Sense" :30

Product: Genesis

Agency: Innocean USA

Executive Creative Director: Greg Braun

Creative Director: Robert Prins

Creative Director: Max Godsil

Copywriter: Josh Cassidy

Art Director: Vince Feliciano

Director of Integrated Production: Jamil Bardowell

Senior Producer: Harry Lowell

Production Company: Moxie Pictures

Director: Frank Todaro

Executive Producer: Karol Zeno

Producer: Laura Heflin

DP: Eric Schmidt

Editorial: Arcade Edit

Editor: Geoff Hounsell

Managing Partner: Damian Stevens

Executive Producer: Nicole Visram

Post Producer: Leslie Carthy

Assistant: Sean Lagrange

Telecine: Company 3

Executive Producer: Rhubie Jovanov

Colorist: Dave Hussey

Online & FX: Timber

Jonah Hall: Creative Director

Chris DeCristo: Lead Flame

Compositor: Krista Benson

Flame Assistant: Austin Hickman-Fain

Head of Production: Michael Theurer

Producer: Emily Avoujageli

Mix: Eleven Sound

Artist: Scott Burns

Executive Producer: Suzanne Hollingshead

Assistant: A.J. Murillo