Dawn!
My crush years ago was on Black Canary in Green Lantern/Green Arrow. The way Neal Adams drew her made you wonder how it got past the comics code. 
Death in Sandman is the cutest, though not as sexy.
Thank God! I thought I was the only one with a crush on Kitty! I used to feel a little sick about it (I was seventeen at the time, and that age, wallpaper would make me horny).
I kinda like Frank Miller’s version of BW, short hair, charcoal grey bodysuit with the spider on the left breast – yummy. 
Also: Scarlet Witch. Especially as drawn by John Byrne.
:puddle:
Ice, from the Giffen-DeMatties Justice League. Specifically, the picture of her from the loose-leaf “Who’s Who In the DC Universe.”
The yummiest girl picture I’ve ever seen of a comic book female. Not the hottest, not the sexiest…but definitely the yummiest.
Pretenders! All of you!! I loved Kitty Pryde like no man. Even her introductory John Byrne big-face period.
That, however, was romantic love. For sheer junior high-school fanboy lust there was always Starfire from The New Teen Titans. I’m no psychologist, but my armchair diagnosis is that it must have been the boobies…
And to those of you who are all hot for John Constantine…don’t you realize he’ll just get you killed?
(To all the Jhonen Vasquez fans out there: In I Feel Sick, when Devi is flashing back to her date with the creepy “can I touch your butt” guy…that initial shot of her sitting on her bed with that cautiously optimistic look on her face…didn’t you want to just pick her up and cuddle her like a bunny?)
Condor Joe, from Gatchaman. oh my.
At seven I fell for Jason on Battle of the Planets, but now that I’ve seen the original version… oh… my…
ROTFLMFAO! Oh, perfect…
Ribeye, I was waiting for someone to speak up for Dawn. 
arisu, Daniel-Dream might have become more interesting if the series had gone on. But, yeah, I go for skinny, dark and mysterious.
(Even if my RL b/f is muscular, pale and dimpled–but, hey, they’re evil dimples!)
neofishboy, John Constantine will get ya killed, but Dream will consign you to Hell for thousands of years! Heck, if we wanted nice guys, we’d all be drooling over Peter Parker.
I agree wholeheartedly. Sam Keith knows how to draw a woman.
But more so than Julie, I’m absolutely in love with Joseph Michael Linsner’s Dawn. Never before has there been a more perfect set of hips and thighs in a comic. How could any man who loves full-bodied women NOT want to bow down and worship this goddess of birth and rebirth?
Lol! It might be easier for me to list the ones I dont have a crush on! heh heh…
Ok, top of my lust list, is Wolverine, especially the Michael Turner version.
Then of course there are half the other X-Men, Gambit, Archangel, Beast, Colossus, Cyclops, blah blah, oh and we might as well throw in half the X-Girlies too…
Of course there’s Ian Nottingham from Witchblade… D from Vampire Hunter D, hundreds of other manga characters…
How about computer games? I got a thing about Sephiroth from FF7… hell, I even though the lion thing in FF7 was kinda cute…
The list goes on!
In fact, I am sad to the point that I have even created an online harem to perv over them! (havn’t finished it yet though…)
It’s all good fun! And some of the fanfic out there is very… um… entertaining!

I’m suprised I’m the first to say this:
Psylocke from X-Men. Not only is she Asian (Asians are hot…), but she is one of the best martial artists in the world! Man, now I have to go fine my copy of the Marvel Swimsuit issue to see her in a bikini…droooooool…
Also Rouge…mmmm…that southern accent gets me every time (naturally I attribute her voice to that of the animated series circa 1995.)
Angelfood McSpade
looky here about 2/3rds of the way down.
Early '90s, JLE-era Power Girl
For two good reasons:
I was 13. We didn’t have cable.
oh, and those other two reasons too…
What about Cloud? If we can include FFVII, I’m putting in my vote for him.