Is there a beer log app that would work on an iPod Touch?

I have recently started drinking various types of beers and would like to keep track of what I drank, when, what type of beer (pale ale, IPA, whatever) and whether I liked it or not.

Is there some sort of app that I could get that would work on my iPod Touch that would enable me to keep track of this information, or should I look for a paper version of beer journal (I’ve seen those online)?

Ideally, I’d like something that provides a review of the beer, and I could indicate whether or not I agree, give it a personal rating, and make comments.