I don't have one but I think they are a great idea. I used to use a small bodum(coffee press) before I got my coffee maker and it makes a single serving of rich tasting coffee!! Mmmm, I think I may get it out tomorrow morning.
Edit- I can't believe I almost missed a chance to use this
My Mom just got this one from Target pretty recently. It is a Melitta. My Dad really likes it. He is the only one that uses it because he is the only one that drink coffee.
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I don’t want no part of your tight-ass country-club, you freak bitch!
we have the same Melitta one that RyanJ posted, the "one:one." it's actually pretty good. my fiance uses it all the time because he drinks a lot of coffee, and i'm not always home/don't always want any so it's easier than making a whole pot. plus there's virtually no clean up of the actual coffeemaker involved. i think the pods that you use with it are more expensive than just buying coffee, but that's probably to be expected for the convenience.
my future in-laws have the same one and they love it (they actually gave ours to us), although i think my future-father-in-law likes it because he can say "does anyone want an iPod...oops, i mean javapod?" hehe...it drives my fiance crazy.