Lights, camera, action! Movie cameos have the power to surprise, delight, and steal the spotlight from the main cast. These brief appearances often leave a lasting impact on audiences, becoming the standout moments that viewers remember long after the credits roll. From unexpected celebrity appearances to iconic character cameos, here are some unforgettable movie cameos that truly stole the show.

Who can forget the iconic cameo by Stan Lee in the Marvel Cinematic Universe? The late comic book legend made a habit of popping up in various Marvel films, always delivering a memorable line or two. His appearances became a beloved Easter egg for fans, eagerly anticipating his cameo in each new movie installment.

Another standout cameo comes from Matt Damon in "Thor: Ragnarok." Damon's surprising portrayal of an Asgardian actor playing Loki in a theatrical reenactment of Thor's past exploits is both hilarious and meta. The actor's brief but memorable appearance adds comedic flair to the superhero film.

Furthermore, Tom Cruise's unexpected cameo in "Tropic Thunder" is nothing short of comedic genius. Playing the foul-mouthed and demanding movie executive Les Grossman, Cruise's transformation is so complete that some viewers didn't even recognize him at first. The actor's willingness to poke fun at his own image makes this cameo one for the ages.

In the realm of animated films, "Shrek 2" delivers a musical cameo that stole the show. When the Fairy Godmother breaks into a rendition of Bonnie Tyler's "Holding Out for a Hero," viewers are treated to the unexpected vocal talents of none other than Jennifer Saunders. The song-and-dance sequence adds a whole new dimension to the film and remains a fan favorite moment.

Lastly, the late great Robin Williams made a memorable cameo in "Friends with Benefits," where he plays a quirky doctor advising Justin Timberlake's character. Williams brings his signature humor and warmth to the role, elevating the scene and leaving a lasting impression on audiences.

These unforgettable movie cameos serve as a reminder of the magic that can happen when unexpected guest stars make their mark on the silver screen. Whether through humor, talent, or pure surprise factor, these brief appearances have a way of stealing the show and creating moments that moviegoers will never forget.