I've got a lot of friends that are gamers. Some play for fun and some play in hopes of going pro (yes, you can become a professional gamer). I hear my roommate scream at his computer and on his game chat all the time.
Rapper Snoop Dogg is not only an avid gamer but apparently a really sore loser. Watch him lose it while playing Madden.
WARNING: NSFW (LANGUAGE)