"Hey, I know her! She was in that movie with that other guy, and also in that TV show about that thing... What's her name again?"

Hollywood is a vast machine, and aside from a handful of top-tier, high-profile, A-list actors and actresses — and maybe a few tabloid darlings and teen heartthrobs — it's hard to remember the names of all the stars, even the ones you've seen on screen countless times before. More often than not, you may find yourself referring to an actor as "that guy who was in [insert film here]."

But worry not: PopCrush has got you covered! Below, discover 50 Hollywood actors and actresses who you've probably seen a million times before... but just can't seem to remember the names of.