Check out Loudwire's Top 50 Metal Songs of the 21st Century here. I've highlighted some of the songs below with accompanying videos. And for the record, I think Number 20 (Lamb of God - Redneck) should have been ranked better. It is by far one of my favorite songs ever.
NUMBER 47 - TRIVIUM - PULL HARDER ON THE STRINGS OF YOUR MARTYR
NUMBER 26 - NECROPHAGIST - STABWOUND
NUMBER 20 - LAMB OF GOD - REDNECK