What are some "CLASSIC" underground hip hop songs?

[kannon]

I'm burning someone a mixtape of the illest underground hip hop songs of the late 90s/early 2000s.

Here are a few I've got, let me know what I'm missing...

Aceyalone - The Guidelines
Blackalicious - Alphabet Aerobics
Brother Ali - Room With A View
C-Rayz Walz - Who The Fuck Are You?
CunninLynguists ft. Masta Ace - Seasons
Dead Prez - Hip Hop
Felt (Murs & Slug) - Hot Bars
Freestyle Fellowship - Six Tray
Haiku D'Etat - Non Compos Mentis
Heiruspecs - 5ves
Hieroglyphics - You Never Know
Immortal Technique - Peruvian Cocaine
J-Live - Like This Anna
Jurassic 5 - Quality Control
PackFM - Stomp
People Under The Stairs - Acid Raindrops
Pharoahe Monch - The Light
Q-Tip - Let's Ride
Rawkus Records - Protective Custody
The High & Mighty ft. Mos Def - B-Boy Document '99
Zion I - Boom Bip


What are some classic underground shits that shaped your early teenage years?