Jeremy wants to help Damon get to the bottom of Katherine and werewolves and everything plaguing Mystic Falls. He mostly does so via the Internet.
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Damon went all Jack Bauer on Mason in "Plan B." He ended up tearing the werewolf's heart out.
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Caroline and Bonnie share a moment in this scene. It's courtesy of the episode "Plan B.
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The Vampire Diaries Season 2 Episode 6 Quotes

Stefan: Elena and I are taking a pause.
Jenna: That's not what it sounded like this morning.

Your search for life's purpose is as obvious as it is tragic.

Damon