See Me Smile Products, Inc Monkey Infant Mirror

This mirror is definitely the best out there. It has the biggest mirror available. It is very clear and not warped or foggy. It has multiple attachment options.

However, it is best used with a headrest. It has an optional way of using it in the middle seat. Unfortunately, this method instructs you to use a rolled towel along with some strings and a safety pin provided. I've rigged it to work, but it took a lot of work and it still gets bumped or moved fairly often. I just wish they could come up with a better system for the middle seat.

Regardless, I still highly recommend this mirror. It is the best you will find.

UPDATE 2/8/08:
I finally became so sick of it flopping forward and backward with the towel in the middle position that I decided to rig it my own way. I looped the ties through the bear and the strings on the towel. I then tied each end of the ties to the head rest on either side of the middle seat. It works...Read more

I've got a bump for a headrest. Which is to say I've got no headrest and it's been really hard to find a rear view mirror that would work. Between my 2 kids (one who's finally forward facing now) I've gone through probably 10 of these mirrors. As I'm sure you've found out, none of them work without an actual headrest. I saw this on amazon, went to Bearview's website and watched a youtube video (type Bearview mirror) about how to install this without a headrest (which I urge you to do because you'll see how the mirror installs and if it will in your car). The $25 they're asking for it seems pretty steep but I assure you it's well worth it. The mirror itself is LARGE, there's no straining to see your baby. And while it's convex (rounded), it's also remarkably clear and doesn't distort or warp the view of your baby. The panda is also super cute, it's very plush and soft (not that your baby will be playing with it, just thought it was worth mentioning). Most importantly, this mirror...Read more

I have the monkey version of this mirror and it is the ONLY one I have found that you can actually see your child in without straining. All of the others at Target, Babies R Us, Walmart... are fuzzy. You spend too much time trying to focus and not enough time with your eyes on the road. With a quick glace, you can see clearly. It sounds stupid to say it's the only mirror I can see out of... but it is true. All the others are useless. My son now sits facing the front and loves to mac at himself in his monkey mirror.