Bava's Music City - Behringer C-1U USB Studio Microphone
Note that studio class large-diaphram condenser microphones are usually in the multiples of hundreds of dollars, so this microphone (and the similarly priced XLR version eg http://www.new-media.com.au/Behringer-C-1-Studio-Condenser-Mic.html) is a bargain at the normal RRP of just under $100. At half that price again, it's amazing value.
Price is $49.98 (you get a slight further discount than the default price showing on the site, after you create an account), plus shipping if you can't get to their shop.
Be aware that large-diaphram condensor microphones can be a bit delicate, so (even though this does have shock protection) take care when moving it (the XLR version of this comes with a case, but I don't think that the usb version does), plus don't subject it to sudden excessive noises (screaming fine, explosions not so fine). I would also note that if you have the money, XLR microphones going into a mixer is the way to get the best sound as well and provides other advantages, but that route costs significantly more than this.
* Professional, large-diaphragm condenser microphone with built-in USB interface, ideal for podcasters and musicians
* Plug this amazing USB-mic straight into your computer and turn your PC or Mac computer into a recording system without the need for any other hardware
* Directly works with your PC or Mac computerultra-low latency ASIO and WDM drivers for PC audio optimization included
* Exceptionally flat frequency response and ultra-high sound resolution perfect for voice, acoustic instruments, etc.
* Cardioid pickup pattern for outstanding sound source separation and feedback rejection
* Pressure-gradient transducer with shock-mounted capsule
* Comprehensive podcasting and audio editing software (Podifier, Juice, PodNova, Golden Ear, Audacity) for computers, both PC and Mac
* USB connection cable included
* Swivel stand mount included
* Ultra-rugged construction with metal die-cast body
* High-quality components and exceptionally rugged construction ensure long life
* Conceived and designed by BEHRINGER Germany
Other info here: