Video footage of a recent photo shoot with the "Big Four" (Metallica, Slayer, Anthrax, and Megadeth) was posted online by Anthrax guitarist Scott Ian. Watch the clip below. The four San Fransisco thrash legends played together on the same stage for the first time last Wednesday in Warsaw, Poland. They will play several more shows across Europe , with their June 22nd show in Bulgaria to be simulcast in more than 450 movie theaters in the US. Click Here for ticket info or to find a participating theater in your area.