Well, I have a bamboo fun pad from Wacom. (which is the one with the circle thing on the top, and the two buttons on either side of the circle thing.) I would say that if you are just a person that photoshops occasionally or just wants to try using a different method of interaction for your computer than its fine. The only thing is that it takes some getting used to, and as with all tablets, if you are used to resting your hand on the "pad" and sliding your pen around it will begin to stick to it, which makes it a bit difficult to use.
If you are a person that uses photoshop a lot, then I would not really recommend this. The levels of sensitivity are only really useful for a small range of pressures (512, for a moderate user this is plenty), and the lack of rotation within photoshop via pen tilting may be a problem. One of the other things that is a slight problem is the mouse that comes with it. Which is only really good for web browsing, and spreadsheets. (but of course you can use a regular mouse while using the bamboo pad.)
It really depends on what you are using it for. If you photoshop occasionally I would recommend it, if you are some sort of professional then I would tap you across the
head and tell you to get a better one.
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Look at this sig, its new, and I used the clone tool, and the worst part is, you don't even care.