IMDb, the Internet Movie Database, has long been on of the industry's top tools. Many people who work in the industry have taken the extra step of joining IMDbPro, which provides access to a great deal more information about people and projects, as well as control over your own presence on IMDb.
One of users' chief complaints about IMDb is that there has been no way to control what the site says you're "Known For." That's the four highlighted projects on your IMDb profile, and it's important because it's one of the first and biggest things visitors see when they view your page. The site automatically prioritizes movies over television and other types of work, so if your movie credits aren't your strongest, you've been out of luck. For instance, my career has been mainly in television, but my "Known For" section highlights the few small films I've done, so it hasn't been featuring my strongest credits.
But now, IMDbPro subscribers can customize the "Known For" section! Just log in to IMDbPro, find your profile page, and look just below the header row to find "Known For". Click the "Edit" button, and choose which projects you want to highlight. Your changes should be applied within 24 hours. Easy peasy!