So, most of you know that I'm a father now (as of the past year and a half), but what you're all unaware of is that my son is incredibly smart (at least we all think so, and I swear none of us are biased in any way ;) ) And though vocabulary is only a small part of the intelligence puzzle, my kid knows a huge number of words for his age (as far as I'm aware) Here they all are, as well as I can recall them all (remember, he's only 1&1/2, and much of this list he's known for months; though as expected per child development around his age, he has very recently hit an explosion in learning new words) Most of the following are actual, honest-to-goodness, plainly spoken words, and some are approximations or baby-talk mispronunciations (which I'll make notes on as needed):

Family members:

Mommy
Daddy
Paw-paw (paternal grandpa; this is slowly turning into "grandpa")
Me-me (paternal grandma; she's referred to as "Grammy")
Papa (maternal grandpa; this one should stick, as that's what we refer to him as)
Mama (maternal grandma)
Me (himself, in pictures or the mirror)
Nick (his closest-in-age cousin)
[Uncle] Bryan (my brother)

Animals:

Dog (which says "Arf")
Cat (which says "Mao")
Bird
Moo (Applies to cows... he doesn't say "cow" yet, though)
[Gi]raffe
Lion (which says "Roar")
Frog
Pig
Fish ("feese")
Bee (not just a random sound; actually applied to the insect, both in pictures and real life)
Duck
Monkey (this one is currently just "mee", but he applies it to primates)
Bear
Mouse (still just "mao", but again, applied correctly)
Owl
Sheep (which says "Baa")
[Ze]bra
[S]nake
Elephant ("Ahh-phan")
[Butter]fly

Foods (and related):

Eat
More
Bite
Cup
Milk
Chee[se]
Apple
[Ba]nana
Ice Cream ("i-keem")
Water
Ju[ice]
Fry (for french fries)
Pop (even though he never gets any)
Cookie
Egg ("eyeg")
Butter

TV characters (we watch a lot of Nickelodeon):

Dora
Boots
Go-go (Diego)
Bob (Spongebob; he also recognizes the other characters, and can approximate their names, like "Pappur" for Patrick and "Kwurd" for Squidward)
Ming-ming (the duck on "The Wonder Pets")
Ernie
Elmo
Carly (the girl on "iCarly"... he seems to have a crush)

Body parts (including locating/pointing to them):

Eye
No[se]
Mou[th]
Ear
Hand
Arm
Feet
Pee-pee (this was discovered a few months ago, and diaper changes and baths haven't been the same since)

General nouns:

Phone
Night-night
[Out]side
Slide
Swing
Bubble
Car (which goes "Beep-beep")
Truck
Van
Bike
Plane ("Pane")
Train ("Tane" which goes "Whoo-Whoo")
(The last few relating to vehicles, he uses to correctly identify each type of vehicle he plays with or sees on the road, and the sounds they make)
Baby
Ball
Shoe
Shirt
House
Light
Bath
Stairs
Seat
Clock
Drum
Flower
Balloon ("Ba-oon")
Book
Star
[Re]mote

General verbs:

Stop
Go
Stand
Clap
Roll
Climb
Jump
Peek
Fart (he's a boy, what can I say?)

General adjectives:

Hot
Cold
Off
On
Up
Down
Stuck

Interjections:

Hello
Hi
Bye
No (much to our dismay)
Aww (for hugs)
There!
Whoa!
Wow!
Oh no!
Aw, maaaaan!
Aw, c'mon!
Duh!
Uh oh!
Hurray!
Yay!
Boom!
All done/gone!
Mmmmm (occasionally after taking a bite of food)
Ahhhh (occasionally after drinking)

He's also polite:

Please (well, more like "pwee", but he actually uses it when asking for things)
Thank you ("ankyu")
Excuse me (more like "cue me", but he knows when to use it, and even urges us to say it when we make bodily noises)

Higher concepts:

He's recently been learning colors and numbers... He'll say two, three, four, or five if prompted with the number(s) before (though I'm not sure if he gets the concept, or just has the sequence memorized) For colors, he seems to have blue down pretty good, and can make almost discernable words for red, white, black, brown, and green (he sometimes needs a reminder), but blue and red seem to be the only ones he can correctly apply when asked what color an object is...

I know that learning things is his thing (as with all children), but I'm continually amazed and impressed by the little dude...