Roomba vacuums aren't really known for being the most efficient way to clean your house. They're mostly known for providing entertainment. (See: DJ Roomba from Parks and Recreation.)
So, with that in mind, here's a video of a baby riding around his house on a Roomba. His dad, who posted the clip on YouTube, was kind enough to add a soundtrack, so we recommend watching this with the volume turned up.
Note: this video is quite cute, but no Roomba video will EVER top this one. It's just a fact.