Just got into Dice Masters with my wife a few months ago, and I'm happy to say that I definitely have a problem. We've collected the Avengers vs. X-Men, Uncanny X-Men and DC Comics set and have over 100 unique superheroes already.
Superheroes + Dice + Collectable + $1 boosters = Awesome
For nights when you don't have 4 or 5 players and enough time to play a long board game, Dice Masters is a fun alternative. The card art is good, and the game mechanics keep the action moving. It's especially fun to play your favorite characters (even if they're not always the most powerful.)
Ionic Creator V2
Superheroes Aliens Robots Zombies