Jake Gyllenhaal looks very different in the first promo for his upcoming movie, "Nightcrawler."

The sexy 32-year-old actor, who is famous for his bulging biceps and hot bod, lost a considerable amount of weight for his role in the Dan Gilroy-directed film, which centers on a young man (Gyllenhaal) who stumbles upon the underground world of L.A. freelance crime journalism.

In the clip above, which was posted within a Craigslist ad, Gyllenhaal's character, Louis Bloom, is on the hunt for a new job. The "video resume" hints at the desperation in unemployment that leads Bloom down the path that sets this movie in motion.

"Excuse me sir, I'm looking for a job," he says in the promo. "In fact, I've made up my mind to find a career that I can learn and grow into. Who am I? I'm a hard worker, I set high goals and I've been told I'm persistent. Now, I'm not fooling myself, sir."

It's hard to ignore Jake's extreme weight loss -- he reportedly dropped more than 20 pounds for the role!

Back in November, the "End of Watch" star made headlines after he punched a mirror on the set of the highly-anticipated flick.

"Jake was indeed filming "Nightcrawler" when during the shooting of an intense scene, his character (purposefully) banged his hand into the mirror," his rep said in a statement at the time. "Unfortunately, the mirror broke and Jake's hand was badly cut up. He got numerous stitches at the ER and was released."

Talk about commitment to a role!

"Nightcrawler" is set to hit theaters on Oct. 17 -- are you excited to see it?

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