5. QUBE Remote
The QUBE Cable System was launched in 1977 by Warner Cable, a division of Warner Communications. Basically, the system featured 30 channels, 10 of which were brand-new pay-per-view channels. In addition to channel selection functions, the remote featured interactive buttons that allowed viewers to respond to poll questions during shows, and the results of the polls were shown on screen later in the program.
Cable systems still exist, but the QUBE remote was clearly born in the wrong decade. Every reality show since The Real World in 1992 could've greatly benefited from a device that allowed for lazy one-button viewer participation, instead of the laborious process of text-voting and 140 character tweets.