Pretty much tied between Mal and Spike- I love them both! But there's a lot of great ones on this list of course.
Wash
Jayne
Xander
Giles
Oz
Topher
Boyd
Book
Alpha
Jonathan
Andrew
Dominic

I don't know any of them but (don't hate me!) I love David in Bones so... Y'know!

and Spike :)

Spike and Andew

Wow Klema! O.O
This is a special type of dedication.

My fave male character from any show, ever! :) <3<3<3

Mal & Oz also top my list;)

Noooo, Angel winning over Spike? Not. Cool. I love Angel immensely in his show, but over Spike? It's just not right :P
Well, compared to the girls, this question was a no-brainer. Putting them in order though-- better get cracking.

Spike
Wesley
Mal
Angel
Andrew
Topher
Xander
Giles
Wash
Jayne
Oz
Victor
Doyle
Gunn
Angelus
Lorne
Groo
Boyd
Simon
Caleb
The Mayor
Riley
Book
Jonathan
Lindsey
Hamilton
Wood
Connor
Holland Manners
Holtz
Knox
Paul
Adam
The Master
Warren
Gavin Park
Laurence Dominic

I don't know Alpha or Perrin in Dollhouse yet... but... is that Alexis Denisof??? And Alan Tudyk?? SA-WEET!! =D

Toughest question EVER. Wow. I choose Spike because he's my kind of witty and a peroxide 'do is always a do in my book.

Were it not Spike, I don't think I could choose between Mal, Angel, and Wesley.

Oh, but Giles. And Doyle! Oh, I loved the Mayor. Book was great... Oh jeez. This is a tough one for sure.

Definitely! Spike Spike Spike!!

lol though i seriously love Victor/Anthony (both of them ;D) as well! Jayne is hilarious and awesome, plus Topher totally rocks too - i'm loving his new found "moral" side!

Giles and Wesley and Gunn next XD

Hmmmm...tough....I might have to go with Dr. Horrible- although that's not really a 'show'...

I love Spike! I also really like Andrew, Topher, Alpha and Xander.

Rupert Giles (I love him from the first episode of the show), Spike, OZ, Andrew Wells, Xander Harris, Mayor Richard Wilkins III and Robin Wood (BtVS), Doyle, Wesley Wyndam-Price and Lorne (Angel) and Mal Reynolds and Jayne Cobb (Firefly).