Dishwasher for sure. I have one and haven't used it in 3 years. Do mine by hand. Even when I have company, I usually do the dishes while I am cooking and it only takes about 5-10 minutes to clean up after. No waiting for the dishwasher to get done.
Also fax machine. Don't have one!
Time Warner cable. We are 2 blocks away from their headquarters and it is down at least once a day. Let alone the phone and internet. I logged my calls and made over 80 complaints last year, went through 4 DVR's, their service is terrible. If my husband didn't want the sports channel, it would be out of here!