It was Saturday Night Bieber Fever this weekend!

Justin Bieber made a cameo on NBC's "Saturday Night Live," appearing in two sketches. One with "SNL" alum Dana Carvey who reprised his role as Church Lady and another in a spoof of Minka Kelly and Leighton Meester's thriller 'The Roommate.'

In the spoof, the teen heartthrob plays a college student who gets assigned to room 316 with Deckland, played by Andy Samberg. "So I guess we're best friends now. I love you. ... I'm totally normal," Samberg, who is wearing big glasses and a tight tank top, tells Bieber.

"This isn't going to be one of those things where our friendship starts out fine but then you get really possessive and crazy because I'm not really up for that," Bieber responds.

Meanwhile, the real movie 'The Roommate' topped the weekend box office, bringing in $15.3 million.

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