File sharing help (Mac)

Hey guys. I was wondering if someone would be able to tell me how to set up my macbook to share files through an ethernet cord to another macbook. My girlfriend wants some movies and it gets tedious always having to put them on my usb so i was wondering if i could set up a bridge with an ethernet cord to make it go faster. Any know how would be great.
cheers.

Sorry mate not the best on macs... I find USB the easiest option by far! If not I would recommend going through a gateway/router as it would be a much easier config. How much data u planning on moving? I would just buy a 1T hd and use that as a transfer/backup tool, or if u got a bit of $ get a NAS

Just some tv shows and movies. I've had a look around and it looks like USB is going to be the way to go still. Think i might get a external some time soon. Cheers.