Ok so I finished the series and these are my 20 best episodes. I will also post my seasons ranking.
1. Cash for gold S16 Ep2
2. I Should Have Never Gone Ziplining S16 Ep6
3. Roger Erbert Should Lay Off Fatty Foods S2 Ep11
4. The Losing Edge S9 Ep5
5. Kenny Dies S5 Ep 13
6. Casa Bonita S7 Ep11
7. Tonsil Trouble S12 Ep1
8. The Passion of the Jew S8 Ep3
9. Breast Cancer Show Ever S12 Ep9
10. Hooked on monkey fonics S3 Ep12
11. W.T.F. S13 Ep.12
12. Christian Rock Hard S7 Ep9
13. Chinpokomon S3 Ep11
14. Basic Cable S23 Ep9
15. Elementary School Musical S12 Ep13
16. Good Times With Weapons S8 Ep1
17. Guitar Queer-o S11 Ep13
18. Rainforest Shmainforest S3 Ep1
19. Grounded Vindaloop S18 Ep7
20. Freemium Isn't Free S18 Ep6