Is not in this thread, I bet you thought I was quoting Samuel L. Jackson, but instead im just going to teach you Japanese.
Sou nan dess kar - Is that so? (to express interest/understanding)
Ohayoo - Good morning
Ittadakimasu - Literally means "I receive", this is used before meals
Ganbatte - "do your best", used as encouragement
(person) no koto ga suki - to like someone, not always has romantic implications
kimochi ii - feels good man
ittekimasu/itterashai - used when leaving the house/seeing someone off
taihen desu - "that's tough", often used to show sympathy towards someone
mochiron - of course
abunai desu - that's dangerous
(person) no baka! - "stupid (someone)!", not always used as an insult, often expresses one's frustration/anger towards a person
dame - bad, not good; also used to express prohibition/dissatisfaction
chigau - different
dakara - because, so; when used at the beginning of a sentence, it shows emphasis on the statement that follows.