It completely depends in what era of gaming this hypothetical person has the most experience. A younger kid whose first console was PS2/XBOX or PS3/360 probably won't take too kindly to anything pre-FFX.

On the other hand, older gamers who may have missed out on certain games from the good old days (I loved video games when I was a kid in the SNES/GEN era, but could never afford all the ones considered definitive classics by today's standards) may enjoy starting out on IV, V or VI.