We need new bands too...this isnt supposed to be a battle of classic rock, which I know that you all love.
Here are some of my suggestions:
Ween
Linkin Park
The Mars Volta
Matthew Good Band
Our Lady Peace
Finger Eleven
Ben Folds Five
Dashboard Confessionals
A Perfect Circle
Tool
3 Doors Down
Bush
Nickelback
Coheed and Cambria
Counting Crows
Creed
The Darkness
Evanescence
Everclear
Fuel
Guster
Hoobastank
Incubus
Jimmy Eat World
Lacuna Coil
Maroon 5
Chevell
Muse
Nevermore
Oasis
The Offspring
Puddle of Mudd
Revis
Seether
Saves the Day
Smashing Pumpkins
System of a Down
Stone Temple Pilots
The Wallflowers
Zwan