Quentin Quarantino

Reservoir Dogs
The Hateful Eight

All of them except Death Proof from the Grindhouse double feature with Robert Rodriguez.

Probably too late for this to matter, but...

Depends how long you want your marathon and if you want a theme there.

Let's say you're going for three movies - anything less ain't much of a marathon. You probably don't want to lose two slots to Kill Bill, so even though they're awesome, let's set them aside...

You could have a gunslinger evening with Reservoir Dogs, Django Unchained, and The Hateful Eight. Hope you like Mexican standoffs...

You could do a "period drama" night and roll out Inglourious Basterds, Django Unchained and Once Upon a Time...in Hollywood.

Maybe you'd like "underrated Quentin", in which case I'd do Jackie Brown, From Dusk Til Dawn, and Natural Born Killers (the latter two are his writing, not directing, of course).

Or, maybe you're itching for his most renowned stuff, in which case you need Reservoir Dogs and Pulp Fiction, and maybe you'd have to make it four with the Kill Bills in there...

watch all of them dummy he hasn't even made 10 movies