Robert Dinero - back in the day up to today.
Billy Connelly - love him on the screen and off screen in television interviews. He's a wild man! LOL! I love when he's on Conan O'Brien.
Clint Eastwood - not in the 60's, but definitely in the 70's and up to today.
Dustin Hoffman now. I think he's aged very well. I don't think he was attractive at all when he was younger, but now I do!!
Arnold! The Governator! From the late 70's up until this very moment!

What can I say ... it's his body, the ultimate body. *drool* Him in Conan and the Terminator =

George Harrison - from 1966 when I fell in love with him as a little girl, until he left us all.
Eric Clapton - from the early 70's up to today.
There's something very attractive about Elvis and Gerry Garcia, it's in their personalities or personas I guess.
Angelina Jolie, Ashley Judd, Audrey Hepburn are all beautiful women. I find women with bubbly, kind of "out there" but very down to earth personalities like Drew Barrymore, Juliet Lewis and Cameron Diaz attractive too.