Damon and Elena/Katherine on The Vampire Diaries has already won best kiss!
Damon and Alaric vs. the tomb vampires in The Vampire Diaires won best fight.

Here are two more to vote for here.

Vote for Hottest Moment – Stefan and Elena finally give in to their desire on The Vampire Diaries
Vote for Most heartbreaking moment – Damon discovers Katherine wasn’t in the tomb and all his efforts were for nothing on The Vampire Diaries