Here is a (partial) list of what David can say (now that he is 18 months). He can mimic most sounds so I'm only counting it if he uses it spontaneously and in context:
David
Mommy
Daddy
Charlie
Sarah
Allison
puppy
down (also used for up)
E-I-E-I-O (any time he sees a McDonalds - he doesn't get that it's not the same McDonald)
Coca-Cola's great! (any time he sees a Coke logo OR a Pepsi logo. With some prompting, this is often followed by "Pepsi stinks!")
again
more (in sign language, which has now morphed into clapping vigorously when he wants more of something)
yeah
no
please
thank you
thanks
hi
hello
bye-bye
high chair
sippie
lovey
banana
applesauce
woof woof
meow
quack quack
moo
diaper
yellow
red
blue
(no he doesn't know which color is which, except sometimes he is very convincing that he knows yellow)
Christmas tree
Ho ho ho
Bingo! (any time we drive over railroad tracks - I'm not sure how this started but it is now a well entrenched tradition in Mackey vehicles)
minivan
car
shoes
socks
book
school - when driving by his preschool or the big kids' elementary school
I love you too!
I can't (when he can't reach something or open something or do something)
Here you go.