Beats
Beats are the popular headphone brand endorsed and created by artist Dr. Dre. Something fun about the logo is that the lowercase "b" in the circle is supposed to resemble a headphone. While they started selling only headphones, the company now sells everything from speakers to wireless earbuds. If you love music, chances are that you own at least one Beats Electronics product.
Cisco
Cisco is a reputable IT company, but that doesn't mean they don't get creative from time to time. In the lines, you might be able to tell that the design replicates the appearance of a magnetic wave. Less noticeable though is the resemblance to the famous Golden Gate Bridge in San Francisco. San Francisco is also a tech hub and bears their company name in the city name.