Let's start with the ladies since there are fewer of them. I could have picked a bazillion but made the mistake of looking at the guys first and ran out of room!
Nargis: In this screencap from Awara, she demonstrates how she could light up the screen, and any movie in which she played a part.
Kareena: How can you look at this picture and question my choice?
Amrita Rao. I'm pretty sure she can act, after seeing her in Main Hoon Na and Vivah. Regardless, she's freaking gorgeous.
Rekha: her strong features made this unconventional beauty stand out from the baby-faced crowd. She's aged in a more interesting fashion than most, too.
Preity: no list like this would be complete without mention of my favorite. Her dimples are adorable and her sharp mind admirable, but she can also rock the classy look, as the above photo (from Vogue) demonstrates.
Shahid Kapoor: He's ditched the babyface and the boy-band clothes, so I can love him without cringing.
Sonu Sood: his sensitive portrayal of Jodhaa's brother added to the all-around fabulosity of Jodhaa Akbar, but his amazing physique makes it pretty clear he considers working out his day job.
Roshan (or Shiney) Ahuja: He totally wishes he had found me first. Or maybe that's just my very able imagination talking. Ssshhh, don't break the emotion.
Shashi--I totally stole this screencap from Memsaab because it made me drool on my keyboard. Abhishek: Yes, smoking is very bad for you. But I'm pretty sure that cigar spontaneously ignited from proximity.SRK: he doesn't always float my boat, but in Asoka he rocked the kohl and my dil.
Hrithik: I stole this from his Stargazing thread at BollyWHAT (it was taken by Andromache, to whom the forum owes a debt of gratitude). Before his surgery, and forced rest, I would've said he was off-puttingly musclebound. Now that he's got wrists and a neck again, I've joined most of the rest of the guy-prefering world in admiration.
Jackie Shroff: I know, I know. I might be the only one who's got him on my list. But he and Madhuri were the two best things about Devdas. (Preview!) Dude, he's aged well.