Dwayne "The Rock" Johnson's fourth time hosting Saturday Night Live included a musical monologue about Viagra, and the reappearance of "The Rock" Obama.

Elsewhere in the show, Kate McKinnon offered a dead-on (no pun intended) impersonation of The Jinx subject Robert Durst, and a hilarious pre-taped commercial skewered Starbucks' ill-advised "Race Together" campaign.

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Watch those sketches and more highlights here:

"The Rock" Obama cold open: Frustrated with the antics of Republicans John Boehner (Taran Killam), Tom Cotton (Kyle Mooney), and presidential candidate Ted Cruz (Bobby Moynihan), President Barack Obama (Jay Pharoah) can't take it anymore and morphs into his alter ego: "The Rock" Obama (Johnson).

Dwayne Johnson's "Franchise Viagra" monologue: With several Fast and the Furious films under his belt, The Rock muses about what other Hollywood franchises he'd like to join, with the help of some female backup singers. After all, he is considered "Franchise Viagra."

Pepboys: Starbucks' "Race Together" campaign tried to spark conversations about race, and now Pepboys is jumping on the bandwagon with "Genderflect," a campaign to foster dialogue about gender and sexual identity.

New Disney Movie: Bambi goes Rambo in this promo for Disney's newest live-action adaptation, which stars The Rock (playing himself) as Bambi, Vin Diesel (Killam) as Thumper, Tyrese Gibson (Pharoah) as Flower, and Michelle Rodriguez (Cecily Strong) as Faline.

Improv show: An improv comedy show takes a creepy turn when the troupe members build a performance around audience member Robert Durst (McKinnon).

SNL returns next week with host Michael Keaton and musical guest Carly Rae Jepsen.

What did you think of the show?