Well really, you only watch this stuff because you enjoy it right?  So if you're not enjoying it, then drop it.
As you probably know, I personally only watch one or two shows at a time, so I don't really have this problem.
Nazo no Kanojo X and Kore wa Zombie were the only two I watched from last season.  I'll probably get around to Fate/Zero and maybe Accel World some time.  The only other show which spurred some interest when I first looked is Hyoka.  Other than that, haven't really looked into anything else.