Discover IT - I rent and don't even know where the closest home improvement store is, so I have no use for this 5% bonus quarter.
AmEx Zync - will occasionally use it for iTunes store charges but it has absolutely no rewards now and I have enough credit on other cards to cover anything I want to buy.
A couple Comenity Bank store cards that I use maybe once a year.
Starting Score (07/2011): EQ 706 TU 709