The TechZone has an article about being a game tester.

It's not easy to be a hardcore gamer. It's hard. Wouldn't it be easier if you had a job in the videogames business? Think about it: working for a software company, being able to play games during office hours, with people who share your passion. Free games, industry parties, lots of fun and good money.

Well, think again; working in the PC Games business is nothing like that. Chances are you'll end up dealing with people who just care about the financial success of the company, with marketing executives who don't give a damn whether the game is good or not because "We'll put two-million bucks behind it and it'll sell like donuts", with programmers who cannot understand why an arcade-style racing game cannot have the intricacies of a complex simulator. Still, you'll get some free games plus a decent salary. Still interested? Good.

How To Be a Game Tester - The Ultimate Dream Job?