Logo Ease is a site I just learned about from the excellent blog, ZarcoEnglish. There are a number of sites for creating logos but LE might just be the best.
The first thing you'll notice when using Logo Ease is how sleek the design looks. It really has a nice user interface w/ some wonderful graphics. All you have to do is select your object, then add some text, and change some color and that's it. It's very simple to use.
I highly recommend checking out Logo Ease!!
Below is my basic example...