I have peculiar tastes.. so bear with me!
Drew Barrymore is awesome, i'd love to go on a road trip with her across the world.
Jeri Ryan (and her skin-tight star trek costume) chronically tormented my hormones during my early formative years.
Kylie minogue is utterly resplendent as well I think, she's as amazing now as she was in 1988.
Strange one coming up, brace yourself - Sigourney Weaver. I have a penchant for tall women; she looks fantastic (despite being 61) and comes across as being hugely interesting to talk to as well
Edit: someone I remember from seeing in a naff carry on film one dreary saturday, and decided "If I was 50 years older..." (á la Paul Sidorczuk)