I love it! I usually use it on my truck, chest mount, or on a tripod as CK suggested. Takes great video, and when you learn how to utilize all of the settings, you can get quite a bit from the little camera!
You may want to pick up some additional batteries or a charger as the battery can die fairly quick. I purchased the "Wasabi Powered" ones off of Amazon, and recommend them as opposed to buying the batteries right from GoPro (you save quite a bit of $$$). Also, if you have a smartphone, make sure to get the GoPro app - very useful as a remote, and it allows you to see what the camera sees.
All in all, you'll have a great time with this camera!