It goes well with Helvetica Neue, Lucida Grande, Helvetica, Tiempos Headline and Apple System. If you're thinking about using Gibson then try 72px for headers. Give 14px a shot for content.
People commonly tag it as modern, music, sans serif, big, agency, heading, portfolio, photo, education and finance. You can get it from Fonts.com, Fontspring, MyFonts, Typekit and YouWorkForThem.
Examples Gibson on its own
In action 4 Gibson samples
