My fav (and the kids') favourites seem to be

The board Slide and Find version of Brown Bear, Brown Bear What Do you See?

Knuffle Bunny -- cute and fun

Llama Llama Red Pajama

Mr Brown can Moo...can you?

It's Not Easy Being a Bunny

and the Paperbag Princess and Mud Puddle

All the Little Critter books are good
and
IF You give a pig a Pancake....If you Give a Moose a Muffin and if you give a Mouse a cookie seem to work well

I have tons of Dr Seuss and Munsch but most don't seem to catch on. If there is too much text and the pictures don't change often enough then kids walk off during storytime