... while I won't do a Top 50 episodes of 2008, here are the two that stood out to me. Don't ask me to pick. Please?
Lost - "The Constant". If only Heroes had taken notes note on how to properly infuse time travel into a narrative. This episode was just pitch perfect. And that phone call. Just thinking about it makes me come close to tears.
The Wire - "Late Editions". If The Wire had submitted "Late Editions" instead of "-30-" (the series finale) to the ATAS blue ribbon panel, I'm convinced it would have been a nominee for Best Drama Series. "Late Editions" had it all... and didn't have the extra 30-some-odd minute running time and wrap-ups for characters that people unfamiliar with the show wouldn't fully comprehend as genius. Sigh.