I love this show, especially the friendship between Cha Seungwon and Yoo Haejin. Their on-the-spot skits are hilarious :D
I have watched all seasons, and some more than once.
I highly recommend this show as taught me many things.
I wish to see Cha Seungwon, Yoo Haejin, Son Hojun, Eric Mun, Lee Seojin and Yoon Kyunsang together for once on this show.