Season 6, episode 5.
I can honestly say I don't know how I got hooked because I was 9 at the time and it was the infamous Jon/Victoria fight at pit stop leg. My parents heard all the yelling and made me change the channel.
My next episode was Season 6, episode 8. I literally turned to it right as Victoria was screaming about her finger. After that, I didn't really watch the show except for change to it every once in a while.
I saw season 7 episode 4 and finale. They seemed great. The next time I saw it after that was Family edition. I heard them talking about Park City, and I've lived near there before. I then watched the rest of FE, falling in love.
Since I saw previews for season 9, I watched it till leg 3 since it was past my bed time.
Once it changed to Wednesdays, I watched it from leg 5 on. Season 10 came and I loved the premiere.
Of course, then another problem arose. The air date changed to sunday, and I do not watch TV on sunday. (Religious views) I recorded it and watched it on tape till season 14 when I finally got DVR. I would watch the episodes on Monday morning at 5 am with my brother.
I definitely had a lot of obstacles keeping me from the show, but for some reason I stuck with it. Season 15 and 16 were horrible, but I watched season 17 and it was refreshing. I stopped watching the show actively starting season 19. I watched a few eppies of seasons 19 and 20, but they just don't have that magic. I have been rewatching TAR 7 and 9, and they have that definite magic for me.
I hope to come back to the show, but only if it convinces me.