WingClips has organized a huge number of short clips from movies thematically — perseverance, responsibility — and then lets you show them from the site or embed them elsewhere.
The important caveats are that it clearly comes from a religious, and Christian, perspective, so a number of the themes — adultery, for example, you probably just want to skip. In addition, it appears to have an exceptionally large number of war-related movie clips (“Machine Gun Preacher”?), but that might be a false impression.
As in any website, you just have to pick and choose what’s useful.
I’m adding it to The Best Popular Movies/TV Shows For ESL/EFL.