This is very difficult for me to do, but I'm going to attempt to narrow this to my top 10. One per season... Jesus. Here we go:
  1. The One With All The Poker
    Season 1. My favorite episode. So many good jokes, some great Phoebe moments. Just the best.
  2. The One With the Lesbian Wedding.
    Season 2. Phoebe is possesed by a ghost, Monica turns her kitchen into a battleground, Rachel consoles Carol. So many wonderful things.
  3. The One Where No One's Ready
    Season 3. Brilliant episode that takes place completely in Monica's Apartment with only the main six cast members. Amazingly well executed.
  4. The One With Chandler in a Box
    Season 4. Chandler in a box. Monica's best speech in the entire series.
  5. All of Season 5
    Seriously. The whole season. Season 5 is amazing. Monica and Chandler sneaking around. Rachel and Ross trying to make each other jealous. It's all perfect.
  6. The One With Unagi
    Season 6. I loved when Rachel and Phoebe were living together and bonding. The two of them sneaking up to attack Ross is pure brilliance.
  7. The One With Phoebe's Cookies
    Season 7. One of my favorite Phoebe moments. "Nestlayy Toulhouzah" "Nestle Tollhouse?!"
  8. The One Where Rachel Has A Baby
    Season 8. This episode has my favorite line of the entire series. "How are you feeling?"- Monica, "I'm alright. You know that feeling when you're trying to blow a Saint Bernard out your ass"- Rachel on labor pains.
  9. The One with the Soap Opera Party
    Season 9. My parents write and direct soap operas so this episode has always held a special place in my heart.
  10. The One Where Ross Is Fine
    Season 10. David Schwimmer's most GENIUS work on this show.