[cheebacheeba]

I mean while I'd hit it, I never understood the fascination the public seems to have with Aniston.
To be impolite about it I always thought she might spend some money and have a nosejob.
Nothing really spectacular about her body.
Hair's nice I guess. Nice colour eyes...though yeah to me she has an "ordinary" pretty about her that's been polished up.

As for Angelina Jolie, I think she pushes sex appeal too much and it's never really worked for me. Again, this isn't to say I "wouldn't"...just that when I look at her, I tend to go right to, yeah, she'd be dirty.
Not to mention her frankly erratic adoption addiction...and the fact that some recent pictures had her looking all Madonna armed.
I think she's relatively talented, but yeah I don't really find her appealing.

Two that would easily top the aforementioned in my opinion.
Charlize Theron - She is IMO the most beautiful actress there is, she seems "normal" and comes across as down to earth, not self absorbed, and somewhat intelligent.

Jennifer Connelly - Ha, she was a crush when I was a kid watching Labyrinth, but never thought she'd grow up to just be...damn chick is steaming hot in my opinion. Pretty solid actress to boot. But yeah, brunette, long hair, awesome body. I likes.

...To mention a third based purely on looks and my personal preference "Stacey Dash" ranks pretty highly on my sexy list.

As for "of all time". No way.
Sophia Loren comes to mind...but there's been PLENTY of sexy women over the years, and I really loved the 40's/50's style too.