DSLRs are incredible video tools thanks to the large sensors that produce that cinematic depth of field without the cinematic price. But video with a DSLR has one problem: Sound. The SoundShark is a parabolic microphone that plugs into a DSLR or camcorder and sits inside the hot shoe slot (or off-camera on a stand). Essentially, SoundShark is like a zoom lens, but for audio. It picks up distant sounds when a lapel mic isn't feasible or would wreck the footage.
One of the SoundShark's biggest perks is that odd dome that surrounds the mic. The shield cuts out the noise behind you and picks up more sound from the subject and less background noises. The SoundShark is also simple enough for photographers experimenting with video to use without any headaches.
While the SoundShark does an excellent job at capturing sound (and the sound that you want), it's not a budget mic. Still, the $300ish price tag isn't bad for the mic's capabilities.