AFM - great flow; great shots; great ruleset; fantastic theme implementation that is genious in its depth of campiness. Might be the most well-balanced pin of all time as far as speed, flow and rules. Some say it's easy, but not this dude.
GoT LE - Ugly as fuck but a great game with the new code. I have a wide lineup and I tend to avoid this but when I start playing I can't stop. With all those modes, many games in one. Rules deep as heck. Fast. Flowy - even with the upper PF (make sure your left orbit is fixed). With the new code, the upper PF adds a whole new dimension of multiball and other things to achieve.
BM66 - Clunky but fun and challenging. Lyman knocked it out of the park, integrating the major and minor villains into the game. The campy humour - up there with AFM - makes you smile.
Fathom - Early SS pins have their own brutal charm. Fathom has a great variety of shots, good flow and good rules. Gorgeous artwork.