Oh, man... Let's see.
There is:
Dante and Vergil(DMC)
Leon and Claire (RE)
Dr. Bashir (Star Trek)
Most of the TNG cast
Jim Kirk (kinda only from the 60's)
Batman (Bruce and Terry)
Trunks (DBZ)
Shinji Ikari
Sesshomaru
Virgil Tibbs (In the Heat of the Night)
Boxer Santaros/Jericho Cane (Southland Tales)
Miyamoto and Mizoguchi (The Returner)
Garcia F. Hotspur (Shadows of the Damned)
Samurai Jack
Bubbles (Power Puff Girls)
Jeff 'the Dude' Lebowski
El Chapulin Colorado
Luis Antonio García (Los 3 García)
Mercutio
Titus Andronicus
Prince Hamlet
MegaMan and Zero
Kingo Gondo (High and Low)
Eric Draven (The Crow)
Kenshin, Shishio, and Enishi (RoKen)
Jules Winnfield (Pulp Fiction)
Mickey O'Neil (Snatch)
Mr. X (Layer Cake)
Bond (Casino Royal)
Wesley Gibson (Wanted)
Jackie Chan
Leonardo (Used to be Michelangelo but people change)
Blade
Roy Mustang
Camus of Aquarius (Saint Seiya)
Leone "Léon" Montana (Léon)
Hubert Fiorentini (Wasabi)
And plenty more but I think that's enough. Between books, comics, manga, movies, tv, anime and video games I've gotten to like a lot of characters.
Wait. Other people watch this show?