Books DS picked over and over at 2-3 include,

Carter, Bugs books
Rathman, 10 Minutes till Bedtime, Goodnight Gorilla
Dunrea, Gossie books
McPhail, Bug, Bear, Boy books
All things Boynton, including Snoozers, Philadelphia Chickens, Dog Train (though we never listened to the CDs!)
Fo, Hush
Bateman, Deep in the Swamp
Opie+Wells, My Very First Mother Goose
Frank, Poems to Read to the Very Young (may be out of print)
All things Fleming, In the Small Small Pond
Sendak, Nutshell Library
Blathwayt, Little Red Train compilation
lots of Seuss, but a fav was Oh, the Thinks you can Think!