Lost, episode 6-11, "Happily Ever After" - Theme Song!

EDIT: Youtbue disabled the video I originally embedded, due to copyright claims by EMI. There are plenty still up though, so here's another shot:

For obvious reasons:



For posterity: "Ob-la-di" by The Beatles

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(Pre-edit)

For obvious reasons:



For posterity: "Ob-la-di, Ob-la-da," by The Beatles.

Homepage episode blurb

Desmond is our oh-so-special sno-ow flake. Penny is the half-sister of Dan. Desmond loves Penny so much she makes him faint, which happens right after he takes her by the hand...

Headline

Ob La Di, Ob La Da Life Goes On, Brothah