But knowledge of how technical stuff works and not be totally ditzy
/serious answer.
So you're looking for a guy that looks good in a bikini.
I'm kidding!
It's funny that people are talking about tastes and how it's not a factor. For me it's a huge factor.
I was seeing someone that was a nice girl, striking looking with a really nice personality. But she was a massive Westlife fan. It bugged me and I detest boy/girl bands with a passion. I was in the kitchen at my mums house one day and the girl I was seeing popped round. I had Eric Johnson on.......not DT, not anything heavy and raucous. Just sweet old Eric Johnson and his angelic, soaring guitar tones. She said "what's this rubbish? Turn it off!!!"
The relationship didn't really survive that (amongst other things).
I'm seeing someone at the moment that's a lot more on my wave length. i.e. she hates the movie "Love Actually".
I think it's hard to apply any sort of rational logic to what you or anyone else finds attractive. We've all seen couples where you think "well how did that happen?" But it is what it is. There's no rhyme or reason to it really. You like what you like and half the time, you won't really know what that is till it comes along. I know exactly why I'm really in to the girl I'm seeing at the mo. Not really sure what she sees in me but I'll go Along for the Ride