Think back. Can you remember what it was like to change the channels of your TV manually? When channel surfing and volume tweaking meant bouncing back and forth between couch and console? Although folks from the generation that remembers these antiquated modes of control may not have realized it then, this was highly inconvenient. Fast forward to the era of handheld remote, where we have all the necessary buttons for finding and enjoying a TV program right at our fingertips.