Things like mispronouncing kanji, saying the wrong english words etc. The good thing is at least you can read what they're saying but unless you got so-so grasp of japanese. At least it's amusing to watch and hear
The baka-test part was no doubt the best. Shimono's just damn funny with his english and Harada's comments made me laugh non stop
A Fukuyama Jun special. Most of them are basically him and his dajare while Koshimizu Ami ignores (スルー) his dajares. Amusing though, with him playing around with words
Nothing that really stands out, other than the Kugimiya being cute
Yozakura Quartet: Fukuen's "みんな言えないじゃん!!" . Mako's one was also amusing with one letter off. The Kugimiya and Hino pairing are always nice to listen to, Yukachi's "おチチ...食べやすい"