Last Week, Jesse Holland from MMAmania.com says (in UFC rankings/MMA rankings featured in USA Today for October 2009) Heavyweight:

2. Brock Lesnar
4. Frank Mir
5. Josh Barnett
6. Shane Carwin
7. Junior Dos Santos
8. Brett Rogers
9. Randy Couture

Light Heavyweight:

1. Lyoto Machida
2. Rashad Evans
4. Mauricio Rua
5. Forrest Griffin
6. Anderson Silva
7. Thiago Silva
8. Gegard Mousasi
10. Luis Cane

Middleweight:

3 Weeks Ago, Staff from MMAMemories.com says (in October 2009 Independent World MMA Rankings) Light Heavyweight Rankings (186 to 205 lbs.)
1. Lyoto Machida (15-0)
2. Quinton Jackson (30-7)
3. Rashad Evans (13-1-1)
4. Anderson Silva (25-4)
5. Mauricio “Shogun” Rua (18-3)
6. Forrest Griffin (16-6)
7. Gegard Mousasi (26-2-1)
8. Dan Henderson (25-7)
9. Thiago Silva (14-1)