This Wednesday marks the 100th episode of hit show "Lost".  Below are three clips from "The Variable".

The title echoes that of one of the show's all-time great episodes, "The Constant." No pressure to measure up to that, eh? I mean, it's only the show's 100th episode. No pressure!

In all seriousness, that 100th episode landmark means we don't have much more time to spend getting "Lost" (the show ends its run for good in May 2010).

 Daniel Faraday talks about his mom: