To be 100% technically correct, there is no such thing as a "boom mic".
The "guy on the right" is the boom-op. He is holding a boom pole, which is sometimes called a fish pole. The production sound mixer is responsible for all of the audio aspects of a production. On small crews it is not unusual for the production sound mixer to also be the boom-op. On large crews there is sometimes a cable wrangler, who does the audio "grunt work"; everything from keeping the mic cable from tangling to holding a second boom to maintaining the audio logs.
At the business end of the boom pole is a microphone suspension unit, which holds the situationally appropriate microphone (cardioid, hyper-cardioid, short shotgun, long shotgun, etc.) and reduces handling noise.
Around the mic is a blimp or zeppelin, which provides some wind protection. Often a windjammer, which is sometimes called a muff or a dead cat or a fuzzy, is put around the blimp for additional protection from the wind and other elements.
It is standard practice to plug the microphone(s) directly into the camera for ENG (Electronic News Gathering) and EFP (Electronic Field Production).
