Owen's most favourite pastime these days (unless it's his trains) is singing. He likes to sing and he likes to be sung too. He is regularly increasing his repertoire! We have:

Old Macdonald (Ee-yiiii-yo, Moo, moo, moo.)
Row, Row, Row Your Boat (woah, woah, woah... boat... melon, melon, melon... deem)
Twinkle, Twinkle (Kinko, kinko, how-a, uppa, kinko)
Theme song to Cat in the Hat (Go, go go! 'ventahh)
Frere Jacques (Shocka, shocka, tina, tina, din, dan, dong)
Thank-You song from church this Sunday (ank-you, ank-you)
Baa Baa Black Sheep (Baa, baa, baa, baa, baa, baa, baa, baa)
Tidy Up song from daycare (Tiiiee-up, diiee-up)

He also likes us to sing the Owenized version of "Good Morning" from Singin' in the Rain, and, if walking in the rain, either "Singin' in the Rain" itself or "Raindrops Keep Falling on my Head".

He will say "Mnahmnahmnah" so that John or I will sing "Doo-doo-da-doo-doo."

He can also recite large portions of many of his books (in a sort of very minimal paraphrase, of course) and the plot of Wallace and Gromit in "A Close Shave" (Dog! Sheep! Cha-chine! Truck! Bike! Ladder! Cha-chine! Bang Bang! Oh no! Dog! Sheep!)

In short, I have never met anyone half as adorable.