Top 10 Strangest Music Covers by Celebrities

Allison Williams
Before Allison Williams made it big in features like 'Girls' and 'Get Out,' she was gaining internet fame through her vocal talents. While many of William's singing videos are simple performances into a camera, her take on 'Tik Tok' was really out there. The sombre piano playing gives Ke$ha's party anthem a serious feeling, and Allison is clearly in on the joke. Funny as it is, her consistent eye-contact with the camera is unsettling. The black backdrop behind her makes the look even creepier, especially once you notice its absence from any of William's other videos.

Leonard Nimoy
Leonard Nimoy's Star Trek fame opened a lot of doors for him, including an oddly substantial music career. By the time The New World of Leonard Nimoy was released the series had wrapped and the actor had phased out appearances from Spock and had pushed further into country music. Thus, including Johnny Cash's iconic “I Walk the Line” would seem all too logical. Nimoy's country twang is... fascinating... but makes it feel like a novelty, even in light of his back-catalog. While Nimoy's signature track, “The Ballad of Bilbo Baggins” is bizarre, hearing him cover the Man In Black feels even sillier.

Jim Carrey
To reflect on his illustrious career, George Martin called in famous guests to sing his favorite Beatles songs. Rich with unlikely appearances, Martin chose Jim Carrey for “I Am The Walrus”. Carrey's eccentric voices are as distracting as they are funny, since he changes characters repeatedly in the song. Many other songs on Martin's album are fun but grounded takes on the Beatles' classics, so Carrey's take certainly stands out . Martin even encouraged Jim to push his quirky performance over the top. Carrey jokingly claimed to have defiled a timeless classic, and he may not be wrong.

Bruce Willis
With 'Die Hard' and 'Pulp Fiction' still in his future, Bruce Willis dipped his toes into a musical career. For his debut record, Willis found surprising success when he updated this Staples Singers' hit. While the track's 1980's sound is almost overpowering, it easily fits in with any single from the era. Despite how well it performed for Bruce at the time, the song became retroactively weird once he became a massive star. Willis' version of the song even managed to outperform the Staple Singers' original on the Billboard Hot 100. Oh and you can’t forget Willis’ signature 80s dance moves.

Terry Bradshaw
In the midst of his time as starting quarterback for the Pittsburgh Steelers, Terry Bradshaw recorded his version of Hank William's heartbreaking classic, 'I'm So Lonesome I Could Cry.' While you might expect his singing to be mediocre and stiff, Bradshaw's vocals are truly vulnerable. With his macho and athletic image, Terry's emotional crooning is truly surreal to behold . Despite his NFL success and tenure as a sports commentator, Bradshaw is still performing in concert to this day. But, his continued success in the world of football, however, has made this performance much more strange as time goes on .

John Cena
The Bella Twins became quick YouTube sensations with their lifestyle vlogs, so Nikki Bella called on her husband and pro wrestler John Cena to thank their fans for them. In a shocking twist however, Cena's gift was a touching cover of the Pixies' 'Where Is My Mind?' While many of John's appearances on the channel have been comedic, his delicate piano playing is moving. As outlandish as the concept is on its own, Cena's tuxedo and the artistic cinematography made it truly unbelievable. John keeps the cover consistently unpredictable as he changes up his playing style throughout the video.

Jimmy Fallon
Jimmy Fallon's impeccable talent for impressions have made his celebrity covers consistently hilarious. When he embodied Bob Dylan to cover 'Hotline Bling' however, Fallon's voice was eerily spot on . On top of Jimmy's sublime singing Drake's vague lyrics fit Dylan's sound bafflingly well. Despite how clever Fallon's performance is, there's just something unsettling hearing a folk legend sing hip hop. Jimmy even adds a harmonica solo to the track to complete his Dylan pastiche . The song is also more uncanny without the video, given how easily you can forget that it's actually Jimmy Fallon performing.

Crispin Glover
Crispin Glover's eccentric acting makes him a joy to watch on screen, but it doesn't translate to music very well. Glover's original material was already pretty out there, but his take on Nancy Sinatra is utterly confusing. Crispin sings like a hysterical and bitter ex-lover, completely shedding the sultry and empowering energy of the original version. Glover's shrieking is borderline terrifying, and the song's otherwise normal instrumentation just makes it more worrisome. Mind you, he released this on an album that included dramatic readings and a Charles Manson cover, so maybe it's par for the course.

Vin Diesel
For Valentine's Day 2013, Vin Diesel gave his fans a tribute that was pretty hard to forget. Diesel pours his heart and soul into Rihanna's 'Stay,' using nothing but a microphone and a projector. While Vin's deep vocals and piercing falsetto aren't top notch, his emotional delivery is disturbingly sad. The fact that he spends the entire video in the dark also makes the whole performance a little creepy. Diesel's initial lack of explanation for the video was disconcerting, but he eventually clarified it was dedicated to his girlfriend. Regardless of the intent, Vin's voice cracks and smooches into the mic are unnerving.

William Shatner
William Shatner cemented his place in history as Captain Kirk, but his performance of 'Rocket Man' became noteworthy for completely different reasons. Shatner drags out every line of the song's intro, delivering the lyrics like an action script. Each persona is so over-the-top that they straddle comedic territory, with other characters ranging from stilted to drunk . His take on the song was so hilariously memorable that it's been parodied by everyone from Beck to Stewie Griffin. Shatner even manages to get more ridiculous than his infamously deranged yelling in 'Mr. Tambourine Man' thanks to this outlandish mix of bizarre personalities.