Seth Rogen’s back ― alright?

The funnyman may seem like an unlikely choice for the newest Backstreet Boy, but he proved that he’s not totally hopeless as he joined the millennial quintet on stage for a little song and dance.

Just how did this come to pass?

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No, Seth isn’t giving up his writing and acting career to try his hand as a pop star. He was overseeing Hilarity For Charity, Presented by GIV Mobile, raising money for the Alzheimer’s Association. So not only is Seth becoming a Backstreet Boys a totally awesome and unexpected pop culture mashup, it's also for a good cause!

Seth's comedy buddy Judd Apatow made a big donation to the cause, while stars like Mindy Kaling and Samuel L. Jackson also appeared. The Django Unchained star showed a surprising sentimental side as he revealed his mother's struggle with Alzheimer's.

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Seth and the gang managed to raise over $400,000 for the cause. BSB tweeted that Seth is now "an honorary Backstreet Boy." So, in case that whole movie career doesn't pan out, he's still got something up his sleeve...

What'd you think of Seth as a Backstreet Boy?

Photos Courtesy of Getty Images