YouTube has created many an Internet celebrity over its eight years, a number of whom have remained on the site, gaining a loyal following, and have made a nice amount of cash as well (thanks to the Google AdSense program and other opportunities.
Craig Benzine, who goes by "Wheezy Waiter" on YouTube, used to be just that: a waiter who started posting video musings about his job. He then quit to become a "vlogger" full time.
The Denton, Texas, YouTuber who goes by Laina went viral instantly. Her first video, spoofing Justin Bieber fans - you know the one, with those "crazy eyes" - went viral both on YouTube and in GIF form. "Overly Attached Girlfriend" is what she's known for
Mitchell Davis' "LiveLavaLive" show can only be described as YouTube art. One never knows what to expect with each new video.
Anthony Padilla, left, and Ian Hecox form the comedy duo "Smosh," who started by simply lip-syncing old kids' TV theme songs. Now they have an astonishing 12.9 million subscribers on YouTube.
Felicia Day launched the Web series "The Guild" on YouTube in 2007. It became a hit with the gaming community on which it was based, and before long was one of the most popular Web series out there. Day now runs the YouTube channel "Geek and Sundry."
Yosemitebear Vasquez gained popularity with his awe-inspired description of a double rainbow in 2010. The YouTuber recently joined CNN iReport.
Swedish comedian Felix Arvid Ulf Kjellberg aka "PewDiePie" is currently the king of YouTube subscribers with nearly 15 million.
Taryn Southern's "Hot4Hill" video went viral during the 2008 election and she has kept at it on YouTube, while her acting career has also taken off.
After posting many videos as the childlike character Fred Figglehorn starting in 2006, Lucas Cruikshank eventually ended up with three feature-length TV movies about the character for Nickelodeon.
Jenna Mourey, aka "Jenna Marbles" is the most popular woman on YouTube, with nearly 11 million subscribers. She has multiple claims to fame with videos like "How to trick people into thinking you're good-looking," "Things Girls Lie About"
Comedian KassemG often interviews Californians on their views on issues of the day.
Michelle Phan's makeup and beauty tips have earned her a staggering 5 million-plus subscribers.
Bethany Mota's fashion vlogging has made her an icon to more than 3 million subscribers.
Musician and comedian Bo Burnham's YouTube presence led to multiple albums and appearances on Comedy Central.
Hannah Hart's twice weekly YouTube series (Thursdays are "My Drunk Kitchen") have captured the attention of more than 785,000 subscribers.
Teenager Greyson Chance's cover of the Lady Gaga song "Paparazzi" has drawn well over 50 million clicks in the past three years, and his friendship with Ellen DeGeneres surely hasn't hurt his music career, either.
One night in 2007, Chris Crocker had had enough. The coverage of Britney Spears' various troubles at the time caused him to record the heartfelt, tear-filled plea "Leave Britney Alone!" Nearly 50 million views later, Crocker's life was documented.
True to her name, "Daily Grace" Helbig's Monday through Friday YouTube series covers just about every topic under the sun, and her 2 million-plus subscribers look forward to it.
Brandon Hardesty's spot-on recreations of famous movie scenes (with every character played by him) caught the attention of Jimmy Kimmel and he has since appeared in multiple movies and TV series, most notably as a live-action Eric Cartman on "South Park.