I finally found the thread!
And all my suggestions are here already - particularly Dr Seuss, he wrote so many. I have just introduced ds2 (3.5) to The Cat in the Hat and The Cat in the Hat Comes Back, but there are loads more. Particular favourites of ds1 (and I still read them to him now - at 8) are Fox in Socks, The Sneetches, The Sleep Book, Oh the Places You'll Go, The Grinch (get him that at Christmas, aloha, if you've not got it already), On Beyond Zebra - oh they are fantastic books!
Has anyone mentioned Jill Murphy? Ds1 adored Peace at Last, and Whatever Next? And I'm very fond of Five Minutes' Peace.
The Little Red Train books are good too - Benedict Blathwayt.
Where the Wild Things Are - Maurice Sendak? Anyone said that?
Meg and Mog books are great - strange to read as they are a bit cartoony but my Mum (primary school teacher) said her kids at school loved them - and so do mine.
Mick Inkpen - Lullabyhullabaloo is fab, The Blue Balloon, and all the Kipper ones (but you must do the Martin Clunes voices).
Q Pootle 5 by Nick Butterworth is another favourite (though I've never liked his Percy the Park-keeper books - too wordy).
Is that enough to be going on with ?