i dont think you can "show off" an emulated game. not much will impress those that have only played console games. i also think its a generational thing.
for instance...and this will make you sick.....my 26, and my little brother is 19 (never really got into the arcade scene). when i finally finished my cab a few years ago, i had all the mame games, and tons of pinball games, and of course the console games (mainly for variety because this was first and foremost an arcade game cab). so he comes over, and i start showing him the games....
me: "check it out! galaga, pacman, street fighter, mortal kombat, 4 player simpsons!"
him: "cool"
me: "dude, i got like 5000 arcade games here. this is awesome!"
him: "i guess"
me: "oh and i also have some NES, SNES, etc games as well"
him: "HOLY CRAP, YOU HAVE ZELDA?!!?!? AWESOME!!!"
me: "dude, you suck so bad"
see, i show him a crap load of old school arcade awesomeness....nothing. i show him zelda...he craps himself. its a genrational thing.