What a great thread. I'm not quite sure what the text-book definition of a MILF is exactly. Does the lady in question actually have to be a mother?
Anyway, non-adult related:
Linda Bellingham (something amazing about her sexy husky voice that mekes me wobble at the knees)
Carol Vorderman
Amanda Lamb
Gina Bellman (truly astonished nobody has mentioned this gorgeous lady)
and I don't know whether it's appropriate, but the late beautiful Elisabeth Sladen, who left us all far too early
Adult related:
Shelagh Harrison (without a doubt)
Not sure if the pics came out. First time in trying to attach something. Fingers crossed.