I recommend http://www.bustaname.com http://www.bustaname.com. It allows you to check the availability of websites as you type and has a word combining feature

I recommend http://www.bustaname.com http://www.bustaname.com. It allows you to check the availability of websites as you type and has a word combining feature (warning: it's very easy to waste hours on that site trying out various combinations of words)