Forgive me, jonnyb, for stealing your thread for a second, but I have a question.
If 2 and 3-year-olds like interaction/involvement and repetition, then what do the 4-6 year olds like in a PB?
(I'm ashamed to say I have no kids to ask.)
-- Laura
At 4, my kidlet liked books with lots of rhyme/good rhythm to the writing. For example,
Green Eggs and Ham (dr. Seuss) and
Goodnight Sweet Butterflies. And she loved (and still does) books that talk about how much the parent loves the child, like Mama Do You Love Me by Barbara M Joosse/Illustrated by the fabulous Alaskan artist Barbara Lavallee, Guess How Much I Love You, by Sam McBratney and Anita Jeram, and Mama Loves You by Caroline Stutson and John Segal (rhyming text, along with the parent loving the child theme).
Other than that, she has had a lot of books that were versions of videos she knew, or further adventures of those characters, etc.
All this is may be of limited value because we're not living in the US, so I have no idea how her tastes compare to other 5 or 6 year olds. Also she's reading at about the 3rd/4th grade level (according to the tools suggested to me by the wonderful blue boarders

) so the books we have on hand may be atypical for her age. Because we don't have access to a library with books in English, we have only what we have ordered online, and she's thrilled with whatever we buy, just because it's a new book for her to read.
ETA: How could I have forgotten?! Beatrix Potter - especially, for some reason, the tale of Samuel Whiskers. Oh my, the number of times we have read that. And we still make "dear little muffins" together (as the kidlet likes to call them :D).