Because of my current game group, the only games I've gotten to play in the past 10 years are:
2Ed D&D (2 1/2 years, 2 campaigns)
RIFTS (6 months)
3Ed D&D (7 years, 2 campaigns)
3.x D&D (3 months, various campaigns)
However, they've made some noise about playing a supers RPG (again), so (again) I've suggested HERO and Mutants & Masterminds. Who knows?