Vacuum cleaner technology has seen some important advancements in the last few years. If you're still yanking an ancient canister vacuum around, consider an upgrade. With vacuums, suction is the name of the game, but you might want a little fun (and fresh, clean air) with your 10-minute parade around the living room. Nowadays, vacuums can do more than just annihilate dust bunnies and coax cat hair out of shag carpet. Let's explore five innovative and useful features you should consider when you buy your next vacuum cleaner.