Ranks for the season:
BAD
41. I Was A Teenage Gary
40. Fools in April
MEDIOCRE
39. Jellyfishing
38. Valentine's Day
37. Nature Pants
36. Mermaid Man and Barnacle Boy II
ALRIGHT
35. Sandy's Rocket
34. Squidward the Unfriendly Ghost
33. Neptune's Spatula
32. The Chaperone
GOOD
31. Scaredy Pants
30. Squeaky Boots
29. Home Sweet Pineapple
28. Boating School
27. Jellyfish Jam
26. Hall Monitor
25. Opposite Day
24. Tea at the Treedome
23. Karate Choppers
22. Suds
21. Walking Small
GREAT
20. Hooky
19. Texas
18. Reef Blower
17. The Paper
16. Ripped Pants
15. Help Wanted
14. Bubblestand
13. Culture Shock
12. Musclebob Buffpants
11. Sleepy Time
10. F.U.N.
9. Mermaid Man and Barnacle Boy
GOLDEN
8. SB-129
7. Plankton!
6. Arrgh!
5. Employee of the Month
4. Pickles
3. Naughty Nautical Neighbors
2. Rock Bottom
PERFECT
1. Pizza Delivery
Ooooh boy, season one. This truly was, and still remains as, a magical season. I think the main reason is that the characters drive pretty much every episode of the season. They are all wonderfully characterized, and they make every episode a guilty pleasure to revisit, no matter how bad they might be quality-wise. Yes, there were 2 duds from the season, but I can at least find more enjoyment from watching them than some of the other stuff from the classic era. On the flip side, there are a lot of episodes from the season that are absolutely beautiful, and still hold up because of their stories and characters. The comedy is here, but I would probably categorize most of the jokes as awkward humor, which was fine, but when they found their footing in the seasons to come, they starting delving into visual gags and wordplay humor, which I think works better. Some of the funniest episodes of the season, including "Naughty Nautical Neighbors" and "Musclebob Buffpants" did include wordplay and clever visuals, but for the most part, Season 1 just kinda feels like it's struggling to do the funny. That's not a big deal though, because the season contains really well-told stories as well. "Pickles", "Arrgh!" and "F.U.N." are the most tightly-written episodes in here, which is honestly pretty amazing considering this is the FIRST season.
I'm pretty sure everyone has seen all the episodes from this season alone, but if you haven't for some reason, I do highly recommend it, as it gives a good insight to the characters and tells good stories that relate to them.