before they were famous

For years, entertainment shows would dedicate entire hours to finding photos of celebrities before they were stars. We got to see high school yearbook photos of the 'Friends' cast or a candid shot of George Clooney with a mullet. And we'd marvel at how normal they looked and gasp, "Wow, celebrities really are just like us."

The Internet has pretty much killed those shows since now anyone can do a few Google searches and come up with their own montage of crazy celebrity photos. But the Tumblr blog The Internet Never Forgets has done an excellent job of not only finding photos of celebrities before they were stars, but some of the most embarrassing.

Once upon a time there was a young man with frosted blond hair. This man eventually would become famous, rich and powerful for simply being himself. Who is this man? Ryan Seacrest.

Check out Seacrest in this video clip from 'Beverly Hills, 90210.' It's from 2000, two years before 'American Idol' began, and he's playing a game show host/himself.

In the episode, 'The Final Proof,' Kelly and Matt are set to go on a couples game show, but after Kelly gets too nervous Donna has to step in. Much to Kelly's surprise, Donna does surprisingly well on the 'Newlyweds'-esque game show.

These days the cast of 'Glee' is everywhere; peering at us from magazine covers, rolling eggs on the White House lawn and chatting with Oprah.

They've become such media darlings that it's hard to believe we'd never even heard of most of these actors till the show debuted last spring and made them overnight stars. In fact, for some, like Amber Riley [Mercedes], Chris Colfer [Kurt] and Mark Salling [Puck], 'Glee' is one of their first professional gigs! Crazy what a difference a year can make.

So, just what was this talented bunch up to pre-'Glee?'

Read more after the jump.

George Clooney had some dorky looks growing up, and we got to see a lot of them on '20/20: Before They Were Famous' (Tue., 10PM ET on ABC).

He suffered with a bout of Bells palsy as a kid, so we won't comment on the crooked smile (even though it's kind of cute). But if you look at his career from 'Rosanne' to 'Baby Talk' to 'E/R' (not the popular one; the 1984 sitcom), this dude had some baaaaadddd hair days.

But my how things have changed. Some people just get better looking as they get older, and Clooney definitely falls into that category.

Watch the video after the jump.