Ethan's current vocabulary

At 17 months Ethan has more than 35 words.
He says the following without prompting:

Bubble
Uh-oh
Ball
That ("what's that" combo sounds like "at's that", and "that's a ball" combo sounds like "at-sa ball")
Apple
Mmm (whenever he's hungry, as a yes response if we ask him if he wants to eat, and when he smells something good)
Da-da
Daddy
Up
Down
Basketball which sometimes sounds like baskeeetball
Choo choo
"Owside" for Outside
Tree
Pool
See (we hear "I see" when he wants to see the photos/video on the camera/computer)
Hi
Bye-bye
Deal
"Dat Doo" for thank you
Hot
Beep
Toot (yes, he tell us)
"Scuse" for excuse me...after he toots
Poop (he combines "I poop")
Pee Pee (As in pee pee on the potty.  Sometimes he says "peep" instead.)
"pee-ew" (His sandals make his feet stinky!)
Maaa (but only when he's mad or whining)
Bowl
Two
Hat
"Scoo" for school
Keys
Boppy/Bobby for Mommy

The next list are words he says when we ask him to say them:
Vuv for love
Ba-Ba for Mama
Arpame for airplane
Help

He's starting to become a little less shy with talking around other people.  He saves most of his words for us when we're at home and he's most comfortable or in the car.  He does not say yes or no yet but smiles and giggles when the answer is yes and shakes his head no.