There's alot of them...and their out there.
I saw a blue onion once. Well, I thought it was a blue onion, it later turned out to be a Apple. And it wasn't even blue. I was probably on a trip though.
Anyway, to add something on-topic, personally <I> have trouble using my own webcam. half the time I find the drivers don't work, and then I have to go searching for some badly named function somewhere that let's me see what I already know is in front of my webcam, because my memory is so short I forget what happened within the 2 ms or so lag time of the camera itself.
The sad part is I'm half serious. I used the webcam on my laptop once, and I reinstalled since then. I might not even have the driver installed for it.