Besides literally everything. Feel free to suggest things, there's way more amazing stuff than I can list by myself. (Obviously, if @nathan wants to add his own favorite moments, that would be totally okay)
  1. Nathan going undercover at a nail salon as 'a beautiful woman' by just adding a hair band and a purse to his normal appearance.
    Ab551fbe d96d 4b2f 9e87 453544902f3e
    "You may have expected me to wear a dreas or long hair, but I believe a modern woman can present herself however she likes."
  2. Nathan rehearsing a scene from 'Smokers Allowed' and having the actress opposite him keep repeating "I love you," until he was actually physically moved.
    00a5ef74 e7ce 424f a8af cd28a833aab9
  3. Nathan completely taking over the identity of another man in the season finale, and going through months of training to master tight-rope walking.
    A1b6c622 98c0 4707 a5bd cf40367b67ad
    The grandparents of the guy whose life he took over: "We love you, Corey!" Nathan, in his disguise, through a megaphone with a recording of the actual guy's voice: "Yes."
  4. Nathan deliberately smashing a plate with a cheeky smile on his face while he exits the antique store.
    Cd78d01c 96df 4159 854d ddf56f8a08dc
  5. Nathan spending a fun day at an amusement park with a guy after he admitted that he had tricked the guy into giving him blood and urine samples to scientifically prove that he's fun to hang out with.
    917d08f0 d837 4020 85b1 cdfd125565ad
    Nathan, after explaining what he did: "Am I still someone you'd want to be friends with?" The guy's reaction: "Yeah, I mean, you just took my urine. I mean, that's in the past, man."
  6. Nathan being so committed to his show that he actually extracted the urine from the urinal himself.
    Be23c0c1 9d56 4b94 9d04 5b3df6cb1ee8
  7. Nathan making this face while riding a rollercoaster with the guy he tricked into giving him blood and urine.
    35f0ea41 fc1d 4e35 81f2 41a585f4f31d
  8. Nathan trying to fit in at a biker bar.
    722dc4f2 86aa 4bce 9da1 ec2d4d22dc6a
  9. Nathan bro-ing out in the designated man zone he created in the back of a women's clothing boutique.
    31132faf 947d 4660 ac0d d05e4fb26069
  10. Nathan starting Summit Ice, the first apparel company to actively promote the true story of the holocaust.
    78a13d57 cb19 4f6a 8d9d d6cb87a5a657
    He did this after he found out that the company that made his favorite jacket, Taiga, praised a known holocaust-denier in their advertising. 100% of the profits go to the Vancouver Holocaust Education Centre. http://www.summiticeapparel.com/
  11. Nathan giving de workout guru he hired a convincing disguise so he can work out at his own gym without people recognizing him.
    21fe5db8 eabe 4b7e b928 5ee8f86801d2
    Nathan did this after finding out that the guru wasn't using the gym he had set up for him in the smallest storage space you've ever seen.
  12. Nathan going through great lenghts to help a small electronics store compete with giant corporation Best Buy.
    8f4fb270 4dbd 44ce b211 27884d8a7c51
  13. Nathan questioning people to see if they could testify against Best Buy in court.
    65b19294 afc1 459e 8d31 25b1ff0396ce
    "Do you recognize this man?"
  14. Nathan hiring the worst age-progression specialist he could possibly have found.
    30118c49 bcab 42e9 95ce b8a6686171a8
    The guy basically just copy-pasted the faces of children on pictures of (half-naked) adults. The results were terrifying.
  15. Nathan having his sex box for kids idea tested by having adult film stars have sex very loudly next to the box while a kid was sitting inside... While Nathan stayed in the room the entire time.
    4ee978ee 281b 4d90 bf45 0bf5a7a39551
    The animation showed how he got the idea.
  16. Nathan going all out so that plus-sized people can finally go horseback riding.
    66459aac faf0 46c2 8a2a bf23caac883c
  17. Nathan playing air guitar to get the employees of a nail salon pumped.
    Af891d8b f094 4a2b 859a 554bc3b5bef8
  18. Nathan using a pizzaria's oven to see if it could be used for cheap cremations.
    C5bf8610 3e9a 4c36 ae8a fa0c1bb73cc9
  19. Nathan's incredible voice over lines.
    22ca23cc 39d0 41f3 b852 33e238fb6528
  20. Nathan getting Brian Wolfe, the dickish private eye from the previous seasons, to realize that the photoshoot he did for Penthouse was actually (soft) porn.
    88bd1b1d 3043 40be a8c7 056e9558a09a
  21. Nathan dressing up as the manager of a local Hot Topic for a date with woman who mentioned that she's into alternative music.
    D987e616 9fd4 48cc 8b72 705e4dc235b1
  22. When he and his new friend from Craigslist tried on silly hats to do something fun.
    E1d5166a 66d6 46ed 9c14 9e4b7f9dea22
    Suggested by @lizabeth
  23. When after he admitted to stealing his new friend's pee, and it was water under the bridge (heheheh) the montage of them at the amusement park was underscored by "Steal My Sunshine"
    Suggested by @lizabeth
  24. When he made The Movement book/ebook available on Amazon after the episode and it became really popular 👍
    A9f42639 5b32 43f3 92fd 118beffea59c
    Suggested by @lizabeth