um............lol. Cant name any.........:(

jus correcting some stuff , correct me too if i'm wrong =)
senpai - Senior
daijoubu - I'm fine ( daijoubu ka ? - are you okay ? )
mata ashita - see you tomorrow
anata - you ( formal )
kimi - you ( informal ) usually is for guys to use
anta - you ( informal ) girls / guys can use it
urusai - you're noisy
utsukushii - ( note for the double 'i' )
dame - cannot
iie - no
minna / minna san - everyone
hontou desu ka ? - Really ? ( polite )
nihongo - japanese language
nihon jin - japanese ( the person )
omae ra - you guys ( informal )
anata gata - you all ( formal )
taiyou - sun
uta - song

happy learning =D

actually you are both right regarding sou desu ka . is just how you read it . the pitch determines what it mean
high pitch on 'ka' - really ?
low pitch on 'ka' - oh i see

sugoi - amazing
kakkoii - cool
yoroshiku onegaishimasu - nice to meet you ...etc...
otsukaresama deshita - can't really tell what it means :D
gokurousama - thank you (?) usually said to your junior
daijoubu - it's okay
ganbare - do your best
oishi - delicious
ohayo - good morning
oyasumi - good night
omae - you (very casual)
nande? - why
nani? - what
demo - but
baka - stupid
bakayaro - even stupider :D
gomen - sorry
sumimasen / suimasen - sorry
okaasan - mom
otousan - dad
oniichan - older brother
oneechan - older sister
obaachan - grandma
ojiichan - grandpa
oretachi - we
atashi mo - me too
onna - woman
otoko - man
hai - yes
iie - no
konbanwa - good evening
ja ne - see ya
daisukiyo - i like you
tadaima - I'm home
okaeri - welcome home
ittekimasu - I'm going
iku - let's go
omedetou - congratulations
maji de? - really
hontouni? - really
shitsureishimasu - excuse me
kowai - scary
chotto matte yo - wait a minute
kore - this
sore - that
moshi moshi - hello (on the phone)
itadakimasu - said before eating
sokka sokka - I see
ore - me (boys' way)
atashi / watashi - me (usually girls' way)
boku - me (boys' cuter way :D)
monogatari - story
taiyou - sun
namida - tear
soo desu ka - that's the way it is
dozo - go ahead
kudasai - please
onegaishimasu - please
anata - you
kimi - you
hanashite - let go
kuro - black
shiro - white
aka - red
kanashimi - sorrow
sensei - teacher, doctor ...etc...
senpai - senior
kohai - junior
-sama - very respected
-kun - usually for young boys
-san - polite way
-chan - cute way, usually for girls
zettai - absolutely
yume - dream
niji - rainbow
natsu - summer
himitsu - secret
tantei - detective
gakuen - high school
gasa - umbrella
hime - princess
kitto - surely
uta - song, sing
keitai - cellphone
denwa - phone
hana - flower
hayaku - hurry up
ikuzo - let's go
ikimassho - let's go
minna - everybody
hitobito - people
doushitano? - what's wrong?
betsuni - nothing
nandemonai - nothing
arienaitsuno - unbelievable (you probably know where have I learned this)
kokoro - heart
kimochi - feeling
yokatta - good
owari - end
aisu - ice cream
sankyuu - thank you
baibai - bye bye (not sure if it's really "official", but my Japanese teacher said that it is (she's Japanese)

------

here's all I can remember now. please tell if there's any mistakes.

baka and moshi moshi r the only ones i know about

Eh, here are some I hear a lot in jdramas:

ohaiyo
hai
iie
yoroshiku onegaishimasu
wakarimashita
wakarimasen
tomodachi
nani
nande
doushite
sou ka
sou desu ka
demo
ittadakimasu
gochisosama
ganbatte
zen zen
baka
aho
douzo
hajimemashite
oyasumi nasai
arigatou
gomenasai
chotto matte
daijoubu
kawaii
oishii
moshi moshi
sayonara
nandemonai
omedeto
yatta
sashiburi
onegai
aniki
onsen
senpai
sensei
sumimasen
zutto

Onigiri - rice ball ~!!!!

haha this is my favourite

baka-stupid
kawaii-cute
kimi wo aishteru- i love u
genki desuka-how r u?
daijobu- are you okay?
mosh-moshi-hello

konnichiwa
konbanwa
arigatou
sumimasen
domo arigatou
ja ne
ja mata
ja iko
taberu
tabete
gome
gomennasai
honto
hontoni
ah so desu ka
yappari
yokatta
gambaro
gambatte
namae wa
onna
kawaii
kirei
sugoi
kakkoi
baka
senpai
kouhai
tensai
sakura
hentai
ecchi
daisuki
aishiteru
hajimemashite
dozou yoroshiku
onii-chan
onee-chan
oba-san
oka-san
oto-san
ototo
okengi desu ka
genki desu. anata wa?
daijobu
aniki
anego
nani
nan desu ka
doko kara desun ka
dochira kara desu ka
oyasumi
samishi
omedetou
shoshou
sensei
oishi
chotto matte kurasai
demo
tomodachi
gakuen
onegai
zettai
kareshi
hana
kanojou
onegaishimasu
nani kura
nande
sayonara
kokoro
itsumo
ichi
hashi
anata
watashi
boku mo
ore wa
iie
hai
hisashiburi desu ne
okairi
tadayma

yeah and many others .....but my favorite is baka

nani
kumako >.<
konichiwa
banzai
arigatou
gomenasai
nani
nande
o genki desu ka
moshi moshi

:)

owh..i learned a few...
like.....
yappari~-juz as i tot..(?)(maybe)
choto matte-wait a minute
nande kure-what!idiot! (hahahaha)
matte kure-wait idiot..
ikimashou-lets go
ganbatte-do ur best
ah! are~ah! what~(maybe)
dame desu-its bad..

hohoho..dats all i can think of rite now..hahahaha..
maybe if i watch more jdramas..i'll be good in japanese..ahahaha

ohayoo gozaimasu ~ good morning

konnichiwa ~ good afternoon

chotto matte kudasai ~ just a moment please

mochiron ~ of course

doko ~ where

nani ~ what

incorrect konichiwa correct konnichiwa

i think its "suki desu"..