I had over 20GB of music on my iTunes and over 100 movies stored on my laptop and it started to run ridiculously slow. I found out that my motherboard was melting from too much use (and it was an old laptop), so I asked for one of these for Christmas one year and was pleasantly surprised when my parents actually bought it for me. I moved EVERYTHING over to this and it was the best decision I ever made. Three days after I backed my laptop up to it, my computer died and still can't be turned back on. After I got a new laptop, I plugged this bad boy in and it has made a world of difference. I run my iTunes off of it, my pictures are stored on it, my videos are played off of it, and I could go on and on. This external hard drive seriously saved my life. I definitely recommend this product! Western Digital is a trusted brand for me and I wouldn't buy any other company's product. Western Digital is the way to go. Oh, and I can put the hard drive in my pocket. WIN!