At the age of four: Dickie Valentine (remember him ???) I used to draw endless portraits of him and blush.
From 6 to around 10: Wally Whyton (plus his TV companion Pussy Cat Willum)
From age 10 into teens: Like lots of others here: Paul McCartney
Later teens/twenties: Martin Shaw. He was Assistant Stage Manager at the Queen's Theatre Hornchurch, fresh out of drama school. You could tell he was going to be Somebody and totally gorgeous....
Now: Neil Pearson. Admired for acting skills and other attributes.... Oh, and still Martin Shaw, in greying ruggedness. Oooh.....

- jeanie (lying down in darkened room to recover)