There’s nothing quite like watching a re-run of a show you’ve seen 20 times, only to realize that a new familiar face has been in it all along. Since we’re basically obsessed with learning that so-and-so was in whatever-that-old-favorite-show-of-yours-was before you knew who they were, we thought we’d put together a little gallery of our favorite “OHMYGOD, THAT’S ____!” pictures.
True Blood's Alexander Skarsgard was hot before he was hot-- He was a male model in Ben Stiller's famed Zoolander
All Twilight fans want to be able to say they knew them when. Well if you watched Ned’s Declassified School Survival Guide, then you can! Angela from the franchise played one of Ned's crushes
Before he was suing Facebook for taking his idea, Armie Hammer played a (surprise, surprise) 'hot guy' in Arrested Development
The Garden State's boy wonder was also a babysitter wonder on a 1993 episode of The Babysitters Club
Batman loves Little Women! Wait... No that sounds bad. Christian Bale loves the moves Little Women because they started his career. That sounds better.
Glee soloist Cory Monteith started his TV career as 'man eaten in tent #2' on the CW fan favorite Supernatural
Before Andrew Garfield was Spiderman (and BFFs with Robert Pattinson), he was... doing... something.... on Dr. Who. (We really have no idea what Dr. Who is about.)
Don't you love flashbacks on Friends? Like this one, which shows that Dr. Grey was friendly herself back in the day
If you're 20, you've probably seen the Lizzie McGuire movie 80 times. And it's a pretty save bet you never noticed Lost's Evangeline Lilly as a security guard in it.
When Rachel was on her way to London to stop Ross's wedding, she drove the guy beside her on the plane crazy. That guy? House.
Back before he was sucking blood and sucking at acting in the Twilight franchise, Jackson Rathbone played host of Disney 411
Undeclaired was one of the first times we were introduced to The Office's favorite secritary, Jenna Fischer
We've seen National Lampoon's Family Vacation countless times. But it wasn't until the 96th time that we noticed cousin Nikki was Jenna Maroney.
She's about to become ultra-famous thanks to The Hunger Games, but in 2007 Jennifer Lawrence was still the unknown actress that played the daughter on The Bill Engvall Show
You know the DILF from Suburgatory, Jeremy Sisto? Well not too long ago he was the DILF from the movie thirteen
Dr. Cox, aka John C. McGinley, was our favorite part of Scrubs. But now we know he's in it, he's also our favorite part of Sweet Liberty
We know Brad Pitt's ex was in National Lampoon's Christmas, but we never noticed that Leonard from The Big Bang Theory was the little brother!
We love a bad Britney Spears movie, but we love it even more when we realize Justin Long is in that bad Britney Spears movie!
In the made-for-TV Disney movie Wish Upon A Star that was played every day in 2002, Katherine Heigel played the ultra-appropriate part of the bitch.
Kellan Lutz has always been supernatural, playing Claire's boyfriend in Heroes before he was a vamp in Twilight
Take a closer look at these party extras in The Sopranos. Recognize the blonde? Probably not, but there's no doubt you know her today. It's a young Lady Gaga.
In the best show of all times, Boy Meets World, Marcia Cross played Corey's girlfriend Topanga's mom
Penn Badgley and Kaylee Defer got it on years before they did on Gossip Girl-- while co-staring in the CW's quickly cancelled show The Mountain
Who knew so many people from Twilight were on our TV's before Stephanie Meyer made them famous !? Red head Rachelle Lefevre fell trap to Barney's charm on an early episode of How I Met Your Mother
Don't get too jealous, Dexter: Your wife went on a date with Eric Matthews on Boy Meets World years before you two met.
He wasn't always a looker... Katy Perry's ex-husband Russel Brand once looked like this on a popular British show Mudd
I think we'll have to re-watch Light Of The Phoenix now that we know a young Sam Winchester is in it.
Richard Alpret has the ability to be in all time zones in history. Including the one that Scrubs takes place in.
Remember that dick that made fun of Rory at her graduation on Gilmore Girls? Well now he's grown up and is a real family guy. It's cartoon creator Seth MacFarlane
Mad Man bad ass Vincent Karthesier has attitude his whole life-- He played the smart-minded kid in the movie Alaska
Looks like Joel McHale has had some work done on his head! He was a little bald during his stint on Will and Grace
It wasn't just Justin Long we didn't notice in Crossroads! Zoe Saldana played Britt's bestie in the greatest movie of all times.