Ian Somerhalder stars as Damon Salvatore on the CW's The Vampire Diaries.  Damon is the older of the two vampire brothers and is definitely the darker of the two.

He's spent most of his life trying to resurrect a vampire he fell for in 1864, Katherine. But he has developed feelings for Elena, creating a quasi love triangle on the show.

Damon Salvatore Quotes

How many dessicated hybrids does it take to screw in a light bulb?

Damon

You want a love that consumes you. You want passion and adventure, and even a little danger... I want you to get everything you're looking for. But for right now, I want you to forget that this happened. Can't have people knowing I'm in town yet. Goodnight, Elena.

Damon

Vampire Diaries Quotes

He's your first love. I intend to be your last. However long it takes.

Klaus [to Caroline]

Well in case you haven't figured it out by now, I'm a sociopath. I know, shocker. I like being a sociopath, ya know? I'm not burned by things like guilt or love.

Kai