If anyone would care to check a random selection of the hundreds of previous questions about this, they will find that the answer is Bran Flakes. I've been around long enough to see this question a hundred times myself.
whoa! guys calm down, it's only an advert and it was rubbish anyway, probably was bran flakes thinking about it but the fruit n fibre one did have 'grant' in it too! just sorry i got it wrong now causing all this commotion!! :-( x
"Tasty tasty..." = Bran Flakes = ad with Gorden Kaye from 'Allo 'Allo.
"Apples, hazelnuts, bananas..." = Fruit 'n' Fibre = ad with Ross Kemp from Eastenders/Ultimate Farce...sorry, Force/any documentary where they need someone macho-but-sensitive to present it.
Got that? Good. Now don't wake me again.
*grumbles something about kids of today and goes back to sleep*