Usually you notice this during live shows or while watching videos from live shows.
The Top Ten
1Jason NewstedJason Curtis Newsted is an American metal musician, known for being the third bass guitarist with the band Metallica from November 1986 until his departure in January 2001, he was also a part of Voivod and Flotsam and Jetsam.
Examples: "Harvester Of Sorrow" (official music video), the whole concerts Moscow '91, Seattle '89, and many more. - Metal_Treasure
2Tom ArayaTomás Enrique "Tom" Araya Díaz is a Chilean American musician, best known as the bassist and vocalist of the American thrash metal band Slayer.
He's got a very aggressive headbanging. Well, it's predictable. - Metal_Treasure
3Marcus SiepenMarcus Siepen is a German guitarist and backing vocalist, most known for being the rhythm guitarist of power metal band Blind Guardian.
Pleasure to watch his headbanging because it's very energetic yet beautiful. The type of his hair is very good for this purpose, too - it's tick but floats. - Metal_Treasure
Pär is Sabaton bassist. Check out this YouTube video: SABATON - Ghost Division (OFFICIAL LIVE VIDEO) by Nuclear Blast Records, 21.08.2013 - Metal_Treasure
5George "Corpsegrinder" FisherGeorge "Corpsegrinder" Fisher is an American extreme metal vocalist for the American death metal band Cannibal Corpse and the lesser-known melodic death metal band Paths of Possession.
Windmill style - Metal_Treasure
6Floor JansenFloor Jansen is a Dutch singer-songwriter and vocal coach. She is currently vocalist of Nightwish and leader of Revamp.
Proof: NIGHTWISH - Storytime (OFFICIAL LIVE VIDEO) - Metal_Treasure
7James HetfieldJames Alan Hetfield was born on August 3, 1963. He is an American musician, singer and songwriter known for being the co-founder, lead vocalist, rhythm guitarist and main songwriter for the American heavy metal band Metallica.
In his younger years... - Metal_Treasure
Thorbjörn "Thobbe" Englund is one of the Sabaton guitarists. Check out this YouTube video: SABATON - Ghost Division (OFFICIAL LIVE VIDEO) by Nuclear Blast Records, 21.08.2013 - Metal_Treasure
9Dave MustaineDavid Scott "Dave" Mustaine (born September 13, 1961) is an American musician, singer, songwriter, actor and author. Mustaine is best known as a pioneer in Thrash Metal, being the former lead guitarist of Metallica before his dismissal in 1983, leading to finding and becoming the front man of his own ...read more.
He doesn't do it anymore because he suffers a neck and spine condition. - Metal_Treasure
10Jeff WatersJeff Waters (born February 13, 1966) is a Canadian metal musician and founder of the metal band Annihilator . He's best known as the guitarist for Annihilator, appreciated for his fast riffs and solos . Waters is also the primary songwriter in the band . Very often he has taken on the role of lead singer, ...read more.
11Simone SimonsSimone Johanna Maria Simons is a Dutch singer-songwriter. She is the lead vocalist of Dutch symphonic metal band Epica.
12Steffen KummererSteffen Kummerer (born June 1, 1985) is a German guitarist, multi-instrumentalist and producer. He is the leader, main songwriter, vocalist, and guitarist for the (technical) death metal band Obscura as well as the black metal band Thulcandra.
13Dimebag DarrellDarrell Lance Abbott, also known as Diamond Darrell and Dimebag Darrell, was an American guitarist and songwriter best known as a founding member of two bands, Pantera and Damageplan, alongside his brother, Vinnie Paul. Abbott died in 2004 after he was shot by a mentally unstable fan.
Best HeadBanger Out there
14Corey TaylorCorey Todd Taylor was born in December 8, 1973. He is an American musician, author, and actor best known as the lead singer and lyricist of the Nu-metal band Slipknot and hard rock/alternative metal band Stone Sour.
Just see there concert of big day out 2006 blister exist...