These just don't fit anywhere yet. As I dig around and building up the rest of the pages these will vanish, but until then this is a list of Japanese words I've ran across while watching anime.

Pronouns/People Nouns:
Japanese Rōmaji Definition
ojyou Formal term for a young girl
seiji a wiseman (sage)
sekishi Imperial child
anija Older brother
anata [wa] You
kimi [wa] You (superior to junior)
watashi [wa] I (formal)
jibun [wa] I
ore [wa] I (masculine form of "I")
boku [wa] I (More childish form of "I")
atashi [wa] I (female)
ooaniki Great/Big brother (respectful/personal)
imouto Little sister
kohai Lower classmate
kareshi Boyfriend / male friend
kanojo Girlfriend / female friend
kare Him/he
watashitachi We/us
kodomo Child
minasan Everyone

Calendars words:
Japanese Rōmaji Definition
genbu Winter (black tortoise of the north)
suaku Summer (crimson phoenix of the south)
byakko Autumn (white tiger of the west)
seiryuu Spring (azure dragon of the east)

Items:
Japanese Rōmaji Definition
ketai denwa Cell phone
kodachi Short sword (21-24") - between a katana and wakizashi
katana A type of sword
wakizashi A type of sword
ken Sword
oohoko Great halberd - more like a short handled sickle blade
Penna Pen
goma Eraser

Greetings/Partings
Japanese Rōmaji Definition
okaerinasai Welcome back
tadaima We're / I'm home
ohayou gozaimasu Good morning (non-family/close friend
konnichi wa Good afternoon (after 10am)
konban wa Good evening
ja mata Goodbye
sayonara Goodbye
oyasuminasai Good Night
gochisousamsa "Thanks for the food"
irasshaimase "Welcome" (host's response)
yoroshiku "Nice to meet you." or "How do you do."
gokurousama "I appreciate your efforts."

Languages:
Japanese Rōmaji Definition
eigo [ga] English
nihongo [ga] Japanses

Nationality:
Japanese Rōmaji Definition
amerika-jin American
nihongo-jin Japaneses

Other Words:
Japanese Rōmaji Definition
atari win
tatari curse
yosh (Isn't really one word, but an expression to gain confidence.)
ikai Another World
naka Inside / relationship
tsumetai Cold to the touch, freezing
nanika "Something"
shimobe Man servant
yakusoku Promise / arrangement
oukasai School festival
aishiteru Lovely, darling, beloved
nakama Family as in "lions and cats are part of the same family"
enishi Fate or destiny
ochoushi Little flash of sake, also means "message of condolence"
kawaii Cute
kanashii Sad / sorrowful
kaitou Thief
ikigomi Opinion
sugoi Amazing or terrible
gomi Trash
yamato nadeshiko Ideal women who is feiminie, delicate, respectful, etc.
kirin Japanese unicorn god who protects the just and punishes the wick
koi Love / carp
henamon Strange person or strange thing
aibou Partner / pal
daimyou Shogun's regional political / military leader
otaku Obsessed fanatic (refers to anime lovers normally)
hani hani Not right / isn't good
baka Stupid / idiot
konichiwa Hello
gakko School
jitensha Bike
ie Home
okane Money
gohan Meal / rice
tabemono Food
domo Very much (can be used as greeting as in "domo domo")
wakari Understand
hana Flower / Nose
hanase Speak
nippon Japan
nihon Japan
yoku Knowledgable
mada Yet
demo But
jouzu Skilled (good at)
arigatou (gozaimasu) Thank you
genki Good health
ee Yes (Informal)
hai Yes
sukoshi A little
iie No
sumimasen Excuse me
kanpai Total / complete defeat
aitsu "That person" (rude way of refering to someone)
kajin Beauty (female)
sakura Cherry blossoms
rounin Samurai without a master (bad grades at a university)
chibi Small
baagaa Burger
komono Small things
gusu Even Numbers
kisu Kiss
diasuki Likable
renai love (QUESTIONABLE?)
hakushin Pure of heart, white

Odd things:
Japanese Rōmaji Definition
gao "Growl" or "Roar" (sometimes used by children to say 'grr')

Festiables
Japanese Rōmaji Definition
atsu matsuri Summer festiable

Taxi Terms
Japanese Rōmaji Definition
yoyaku Reserved
kashikiri Occupided
kuusha Available
shiharai Settling bill

Sports Information
Japanese Rōmaji Definition
aisu hokke Ice hockey
ouen suru To cheer or support
ouendan Pep team or cheering group
ajia riigu aisuhokkee Asia League Ice Hockey

Verbs:
This section has been moved to the conjugation section.

If You are seeing this, it is broken. =(