We're a league that has been running for 20 years.
Completely unique rules, simple but challenging (if that's what you're looking for). It's also completely possible to spend 20 minutes and do up your entire season and forget about it for the next few months if that's what you're want.
Full details here: http://forums.dobbersports.com/showthread.php?t=142215
UCFHL.com, free 12 teams, H2H league
Spots available, PM for info