These cinematic debuts had people on the edge of their seats! For this list, well be looking at the greatest and most memorable movie performances from first-time and inexperienced actors. Our countdown includes Uncut Gems, Paper Moon, Roma, Beasts of the Southern Wild, Captain Phillips, and more! Which was your favorite performance? Let us know in the comments below!Watch more great acting videos here: Top 10 Best Movie Performances of the Last Decade: