Product review (5 stars): Wow, sensitive without a ton of noise!
This little (or I guess it's a bit big compared to most people's USB microphones) guy does a great job.  I get very little background noise.  Even though it sits right next to my tower, which makes very audible fan noise, it barely picks it up.  On the other hand, it picks up everything I say perfectly, no matter whether I'm speaking in a normal voice, whispering, or shouting.  I've also streamed video games while using it, with the sound coming through the TV's speakers as opposed to through a mixer in my computer, and it did surprisingly well with that.  I couldn't be more pleased with my purchase.

I wonder if I really needed this one as opposed to the cheaper Snowball iCE, since I don't really need the multidirectional functions, but that's no real fault of the microphone.  You can switch off the multidirectional functions completely to prevent the mic from picking up unnecessary sound.