How do I become a movie extra?

try going to film sites, they might be looking for extras.

there are several agencies in each metro area who cast movie extras. with most, you fill out a profile, give 'em a pic/headshot and if the casting director likes your pic, you get a call back. they cast not only for movies, but also for TV shows (both pilots and recurring shows). most of these services are free or they charge something really small like $20-$50/yr to register. anything more is a ripoff or they're trying to sell their other services like teaching camera presence and such. get in contact with someone who works for a movie production company in your area (i.e. ILM/Lucasfilm or Pixar in the SF Bay Area). many workers there have side projects (indie films) and they're always looking for extras. any arts colleges in the area will also have student projects that they'll be casting extras for. craigslist is a good source for these super low budget movies. another good source of referrals is plugging into the local talent pool for screen and stage actors, comedians/improvisers, and teachers at performing arts schools. they all have networks where they post casting calls.