No secret that I love EMs. They have character, artwork, playability and that great aroma that only EMs have. There are so many brilliant EMs, so very hard to narrow down, but I'll have a crack.
#1 - GTB "Spirit of 76" - So many game after this title used a similar DT setup. Amazing artwork, theme and playability.
#2 - Bally "Nip It" - Zipper flippers and Balligator. Amazing artwork. Slow game, but fun. Seen on "Happy Days"
#3 - Bally "Fireball" - Iconic. Unbelievably great player. Zipper flipper and EM multiball.
#4 - Williams "Winner" - Strange game. Has a playfield window with mechanical horses. Considered more of a novelty than a real pinball ! Is a widebody.
#5 - GTB "Sky Jump" - Drop targets, amazing bonus ruleset with the pop bumper and spotted drop target. Great artwork
There's more - but that's a start !
There's certainly an art to repairing EMs. nothing more rewarding. Reading a schematic is like knowing another language. I find EM repairs to be a journey into real "logic".