well... if its rock you are talking about, id have to say... any GNR solo off appetite for destruction, because its ROCK.
for european metal and those shredding virtuosos...
DragonForce anyone?
Arch Enemy - Taking back my soul; The day you died (there are many more tho)
Soilwork - Machine Gun Majesty (perfomed by Mattias "IA" Eklundh, he apparently used a pocket dildo/vibrator on the pickups during on point of the solo, its very reminisant of the drill on Van Halen's Poundcake'
ANYTHING by Children of Bodom/Sinergy/Warmen
Mercenary - The 'Hours That Remain' cd, yes all of it
Virtuosos
Marty Friedman/Jason Becker - Speed Metal Symphony
Jason Becker - Air
Marty Friedman/Mustaine- Hangar 18 and Tornado of Souls
Steve Vai - Juice
Michael Angelo Batio - anything recorded by him (its like shredding on steriods, i highly suggest Zeppelin forever, or Dream on, or Tribute to Randy if anyone disagrees