Snatch (watching this without sound would not keep your attention)
Lord of the Rings
Monty Python and the Holy Grail
Army of Darkness (and/or the Evildead series)
Big
the Terminal


And for the lady friend...

the Lakehouse (I won't admit that it kept my attention)
the Notebook (I won't admit that it kept my attention)

By the way, for someone that works at a video store, I'd think that this was a question that we'd ask you!

Ahkcs