Top 20 Most Underrated Bands of All Time

What classifies a band to be on this list
1. No/Extremely little popularit
2. People despise them
3. Both
Anyway, on with the list

20: Slipknot
19: Powerman 5000
18: Good Charlotte
17: Blink 182
16: Pennywise
15: Nickelback
14: Buckcherry
13: Static X
12: Limp Bizkit
11: Ill Nino
10: 311
9: (hed) P.E.
8: Fenix TX
7: Nonpoint
6: Stabbing Westward
5: Insolence
4: Pleymo
3. Dope
2. Primer 55
1. Sev
EXTRAS: Other underrated bands...

Rise Against, Methods of Mayhem, Sponge, Box Car Racer, Atreyu, Crazy Town, 36 Crazyfists, The Used, and Nothingface

(Please comment your opinions)