To keep me occupied in the offseason, I played the free Sandbox league the past two years with guys from the now-defunct FantasyAsylum.com. Our league finished in the top 5 out of several hundred leagues, and at one point in the season last year, my team was in the top 50 out of several thousand participants.
The first year it succeeded in sparking my interest in the league, and I actually made it out to an Arena game. However last year I couldn't even watch a game on TV. I've got other stuff going on these days to keep me occupied, and just don't have enough interest. I opted out of Fantasy Golf this year, too.